Pitt and city police are investigating a sexual assault that occurred on Meyran Avenue early Saturday morning — the fourth assault in a week.

At about 1:12 a.m. Saturday, Pitt and city police responded to a call on Meyran Avenue at Fresco Way where a woman told officers that a black man, about 5-feet and 9 or 10 inches tall, had sexually assaulted her at about 1 a.m.

The woman, who is not a Pitt student, told police the man assaulted her at AD’s Pittsburgh Cafe at 226 Meyran Ave. Archie Donald, the co-owner of the bar, did not respond to a request for comment.

The woman told police she did not know the man who assaulted her.

At the time of the assault, the man, who the woman said was heavyset and in his late 20s or early 30s, was wearing a dark sweatshirt with “Columbia” in white writing and a blue tossle cap with a Rams football team logo on the front, the crime alert said.

Saturday’s assault comes a week after three other assaults last Sunday, causing Pitt police to increase their weekend patrols, Pitt spokesperson John Fedele said.

In the incidents last week, a man reported he was physically assaulted on the 3400 block of Saint James Place and two women reported being indecently assaulted on the 200 block of Oakland Avenue and the 3400 block of Fifth Avenue, respectively.

All three victims in last week’s cases were Pitt students, according to Fedele. Police are still searching for the assailants in all three cases, Fedele said.

Police do not think any of the assaults are connected, Fedele said, as the descriptions of the assailants are different in each case.

Police ask anyone with information about the most recent assault Saturday to call either Pitt police at 412-624-2121 and reference their report #16-00448, or City police at 911, and reference their report CCR# 22225.