CASTRO VALLEY (CBS SF) — The Alameda County Sheriff’s Office on Thursday asked for the public’s help identifying a suspect who attacked a woman and tried to rape her in Castro Valley last week.

Authorities said the attack happened at around 1:15 a.m. last Thursday morning in the area of Castro Valley Boulevard and Mattox Road.

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The Alameda County Sheriff’s Office posted on social media about the assault on Thursday, including images of the suspect illuminated by a flashlight that appeared to have been taken as deputies questioned him.

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The sheriff’s office said the suspect fled on foot from deputies after the assault.

In the images, the suspect appeared to be a Black or Latino male of average height with shaved head and goatee. He was wearing a t-shirt with a Captain America shield on the front and blue or grey pants at the time.

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Anyone with information on the suspect’s identity is asked to call the Alameda County Sheriff’s Office at 510-667-7721. Callers can remain anonymous.