UPDATE: The situation has been resolved, and the suspect was arrested after a four-hour incident. Original story below.

SAN FRANCISCO (KRON) — A person was taken to the hospital after a fight Saturday morning in the SoMa neighborhood, the San Francisco Police Department said. Officers responded to the incident around 11:40 a.m. at a residence on Essex Street where a female suspect was armed with a knife.

When police arrived at the scene, they saw one person with a laceration. The victim was taken to the hospital with a non-life-threatening injury.

Police and fire crews were at the scene of a barricaded suspect at a SoMa residence Saturday afternoon.

SFPD officers spotted the suspect inside a residence and instructed her to get out, the department said. However, she refused to leave the residence — prompting SFPD to declare this a “critical incident.”

KRON4 shot video of the scene (view in the media player above).

The public is asked to avoid the area until the incident is resolved. No other information was immediately available.

This story will be updated.