A black man wearing a black t-shirt and pants sexually assaulted a female on 21st Street and Pennsylvania Avenue Tuesday afternoon, according to an alert.

The man was 5 feet 7 inches tall and around 130 pounds, according to the alert students received at 4:16 p.m. Tuesday. The alert said he was in his mid- to late 20s and had short hair.

He “approached the victim, engaged in conversation and then grabbed her in an inappropriate manner, and fled the area,” according to the alert.

Officers in the University Police Department searched the area “with negative results,” according to the alert.