Video helps Berkeley police link suspect to two attacks, arrest on sexual assault charges

Alphonso McInnis was arrested Thursday on several sexual assault charges and a parole violation. Photos courtesy of Berkeley police. 

Berkeley police arrested a parolee on multiple sexual assault charges, including attacking a minor, on Thursday, officials said.

Alphonso McInnis, 27, was apprehended on the 1900 block of University Avenue in Berkeley at 2:12 p.m. on Thursday. An investigation into a sexual assault on a minor that occurred April 19 led detectives to McInnis. And when video from an attack on a University of California, Berkeley student surfaced, detectives were able to clearly identify McInnis as the attacker in this incident, too. 

The April 19 attack involved a "high school-aged minor" that was walking on the 1500 block of Addison Street. McInnis allegedly grabbed the victim from behind, covered her mouth and pressed a gun to the side of her head. He told her not to scream and walked her to the side yard of a residence where he sexually assaulted her. 

And then on April 28, a Cal student was attacked near the intersection of College Avenue and Channing Way. The victim was chased to a dormitory building on Channing Way. The suspect produced a handgun and tried to push the victim off the street and in between buildings. 

But the victim got away momentarily and ran as the suspect chased her. Then a second struggle ensued at the entrance to Slottman Hall – also on Channing Way. The struggle, which was captured on video, ended when the victim fought to escape and got through the front door. 


McInnis was booked into the Berkeley City Jail for several sexual assault charges and a parole violation.

Police are still investing and are asking for the community’s assistance. Police are asking anyone who lives on the 1500 block of Addison Street to review their surveillance camera footage. If you have any related information, contact the Berkeley Police Sex Crimes Detail at 510-981-5716.