(KRON) — A man who allegedly held a woman captive inside a homemade cinder block dungeon has a sexually violent criminal history in Alameda County, court documents show.

Negasi Zuberi, 29, targeted women who he believed wouldn’t be missed, according to the FBI. The FBI said its investigators believe Zuberi used several different methods to gain control of his victims, including by drugging their drinks, impersonating a police officer, and making threats.

Zuberi went by many aliases, including “Justin,” “Justin Hyche,” “Justin Kouassi,” and “Sakima,” FBI investigators said.

According to Alameda County court documents, Zuberi allegedly targeted and raped underage teen girls in the San Francisco Bay Area in 2016 and 2020. At the time, he went by the name “Justin Hyche.”

In this photo released by the Washoe County Detention Facility is Negasi Zuberi in Reno, Nev., on July 16, 2023, who is accused of kidnapping a woman and holding her in a cinder block cell that she escaped by punching her way out had been on law enforcement's radar and is now suspected in other sexual assaults. Zuberi, 29, is now behind bars in Nevada, waiting to be extradited to Oregon, where he is charged in federal court with interstate kidnapping and transporting an individual across state lines with intent to engage in criminal sexual activity. (Washoe County Detention Facility via AP)
Negasi Zuberi’s mugshot was released by the Washoe County Detention Facility in Reno, Nev., on July 16, 2023. (Washoe County Detention Facility via AP)

Underage girls victimized in Oakland

On May 26, 2020, Zuberi beat, strangled, and raped a 16-year-old girl inside a car in Oakland, court documents obtained by KRON4 show.

The 16-year-old girl told police that Zuberi “flew into a rage. (Zuberi) punched victim three times in her right eye with his right fist, while his left hand held her neck,” court documents state. The girl tried to escape from the car but the doors were locked. The girl cried as she was raped and strangled, documents state. After the assault, Zuberi threw the girl and her belongings out of his car and drove off, according to court documents.

Zuberi was arrested by Oakland police officers at a Contra Costa County jail on Oct. 2, 2020 in connection to the May 2020 rape case. He pleaded no contest in December of 2020 to assault. He was granted probation by a judge after serving 56 days in jail.

This undated photo provided by the Federal Bureau of Investigation's Portland Field Office shows the interior of a makeshift cinderblock cell in Klamath Falls, Ore., allegedly used by Negasi Zuberi. The FBI said Wednesday, Aug. 2, 2023, that Zuberi, 29, who posed as an undercover police officer kidnapped a woman in Seattle, drove her hundreds of miles to his home in Oregon, and kept her in the cell from which she eventually escaped and found help. Zuberi who was arrested faces a federal interstate kidnapping charge, and authorities said they are looking for additional victims after linking him to sexual assaults in at least four more states. (FBI via AP)
This photo provided by the FBI shows the interior of a makeshift cinderblock cell in Klamath Falls, Ore., allegedly used by Negasi Zuberi. (FBI photo)

In 2021, his probation was revoked and a warrant was issued for his arrest after he failed to report to his Alameda County probation officer. “The defendant has failed to report as directed in May 2021, July 14, 2021, October 7, 2021, and October 21, 2021,” his probation officer wrote.

In 2016, Zuberi was living on 82nd Avenue in Oakland when he allegedly victimized a Newark high school student. The 16-year-old girl told police that she met “Justin” at a McDonalds restaurant in Oakland and they had sexual relations. The girl told one of her summer school campus monitors that she was fearful that she may be pregnant, and her mother called police. Zuberi was arrested by Newark police officers for felony unlawful sexual intercourse with a minor. He pleaded no contest in 2017 and was sentenced to 60 days in Alameda County jail.

The FBI said Zuberi lived in Oakland and Antioch intermittently between 2012 and 2021.

The FBI’s Portland Field Office is asking for the public’s help to identify more potential victims of Zuberi, who has lived in at least 10 states.

This undated photo provided by the Federal Bureau of Investigation's Portland Field Office shows the most recent photo of 29-year-old, Negasi Zuberi. Authorities say Zuberi who posed as an undercover police officer kidnapped a woman in Seattle, drove her hundreds of miles to his home in Oregon, and kept her in a makeshift cell from which she eventually escaped and found help. The FBI said Tuesday, Aug. 1, 2023, that police in Reno, Nevada, arrested Zuberi after he fled from his home in Klamath Falls, Oregon, where he had taken the Seattle woman. (FBI via AP)
This undated photo provided by the FBI shows 29-year-old Negasi Zuberi. (FBI photo)

‘Judge Judy’ episode

Zuberi appeared on a 2019 television episode of “Judge Judy” when he sued the mother of his two children over a domestic dispute, according to Entertainment Tonight. During the episode, Zuberi claimed that his ex-fiancé assaulted him in front of their baby during a custody exchange.

Judge Judy took issue with the ex-fiancé after she admitted that she was five hours late for picking up the baby from Zuberi’s house. The former couple was living in separate apartments at the time. The ex-fiancé said she was late because she was “getting my nails done.”

Judge Judy sided with Zuberi and ordered the ex-fiancé to pay $2,500 in damages.

This undated photo provided by the Federal Bureau of Investigation's Portland Field Office shows a makeshift cinderblock cell in Klamath Falls, Ore. allegedly used by 29-year-old, Negasi Zuberi. Authorities say Zuberi who posed as an undercover police officer kidnapped a woman in Seattle, drove her hundreds of miles to his home in Oregon, and kept her in a makeshift cell from which she eventually escaped and found help. The FBI said Tuesday, Aug. 1, 2023, that police in Reno, Nevada, arrested Zuberi after he fled from his home in Klamath Falls, Oregon, where he had taken the Seattle woman. (FBI via AP)
This photo provided by the Federal Bureau of Investigation shows a makeshift cinder block cell in Klamath Falls, Ore. allegedly used by Negasi Zuberi. (FBI photo)

Cinder block dungeon in Oregon

The FBI said Zuberi was arrested in July after a woman escaped his home in Klamath Falls, Oregon. The woman was kidnapped in Washington, sexually assaulted, and locked in a cinderblock cell until she punched her way out. According to court records, on July 15, Zuberi traveled to Seattle where he solicited a prostitute. The victim told investigators that he pretended to be a police officer, pointed a taser at her, placed her in handcuffs and leg irons, and put her in the back seat of his car.

He then traveled 450 miles with the woman and sexually assaulted her during the trip, the FBI said.

Once he arrived home, Zuberi forced the woman into a makeshift dungeon that he had constructed in his garage, the FBI said. The cell was made of cinder blocks and a metal door installed in reverse so it could not be opened from the inside. Once Zuberi left, the victim punched through the door, escaped the room, and flagged down a passing motorist, the FBI said.

An FBI flag and a seeking information posterboard are set up next to a podium ahead of a press conference at the FBI field office in Portland, Ore., on Wednesday, Aug. 2, 2023. The posterboard displays photos of Negasi Zuberi, an Oregon man facing a federal charge of interstate kidnapping, and photos of the makeshift cinderblock cell in the garage of his home in Klamath Falls, Oregon, where he allegedly held a woman that he is accused of kidnapping from Seattle. (AP Photo/Claire Rush)
An FBI flag and posterboard are set up next to a podium ahead of a press conference at the FBI field office in Portland, Ore., on Aug. 2, 2023. (AP Photo /Claire Rush)

Zuberi fled from Oregon before the Klamath Falls Police Department obtained a search warrant for his home and found the cinder block cell.

“She beat the door with her hands until they were bloody in order to break free. Her quick thinking and will to survive may have saved other women from a similar nightmare,” said FBI agent Stephanie Shark of the FBI Portland Field Office.

Zuberi arrested in Reno

Zuberi was found hiding in Reno, Nevada and was taken into custody on July 16.

“We are fortunate that this brave woman escaped and alerted authorities. While she may have helped protect future victims, sadly we have now linked Zuberi to additional violent sexual assaults in at least four states, and there could be more,” Shark said.

The FBI’s investigation has extended to multiple states where Zuberi previously resided, including California, Washington, Oregon, Colorado, Utah, Florida, New York, New Jersey, Alabama, and Nevada.

Zuberi is currently in custody at Washoe County Jail in Reno and facing interstate kidnapping charges.

If you believe you have been a victim or have any information concerning Zuberi, go to fbi.gov/ZuberiVictims or call 1-800-CALL-FBI (1-800-225-5324). You can also contact the FBI Portland Field Office at 503-224-4181, your local FBI office.