BERKELEY (KRON) — Police are investigating a pair of strong-arm robberies that happened Tuesday on the University of California at Berkeley campus.

The first robbery occurred around 7:05 p.m.in the Ellsworth Parking Structure, police said.

A 19-year-old man said both of his arms were grabbed from behind by one man while another man went through his pockets and stole his wallet.

Both suspects fled the scene on foot, headed east toward Channing Way. The victim describes them as a black man in his mid-20s, roughly 5 feet 10 inches tall wearing a black hooded sweatshirt with baggy jeans and another male wearing a red flannel shirt with tan cargo shorts and long white socks.

The second robbery happened later that night at 9:30 p.m. on Spieker Plaza near the Octagon Bridge, police said.

An 18-year-old victim encountered two ladies on a bench, one of whom asked to borrow his phone. The women started walking away with the phone, at which time the victim asked for it back before the suspects threatened him and fled towards Shattuck Avenue on foot.

The first suspect was described as a black woman with an athletic build standing roughly 5 feet 8 inches to 5 feet 10 inches tall, wearing a gray hooded sweatshirt and black pants.

The second suspect was described as an East Indian woman with braided hair, roughly 19 or 20 years old and wearing all black.