Detectives from Buffalo's Sex Offense Squad and Monroe County are attempting to determine if rapes at the University at Buffalo and Brockport State College last week are related.
In both cases, the victims told authorities they were forced into cars by two white men who threatened them, according to Lt. David Mann, commander of the Buffalo sex offense unit.
In Friday's attack near the UB South Campus, the victim said a man approached her from behind at about 8 p.m. in the 3100 block of Main Street, according to a police report.
She said he stuck an object in her back and said: "Shut up, I have a gun," then forced her into a dark-colored, four-door vehicle with tinted windows.
Another man, wearing a dark cap, tied something around the woman's face and the two men drove her to an unknown location where the assault occurred, police said.
"The other similar attack happened Thursday night. It started in a parking lot at Brockport State College," Mann said Tuesday. "In this case, the woman did see a gun."
Authorities have declined to provide a detailed description of the attackers, saying only that the men were white.
A different attacker, Mann said, may be involved in two other sexual assault cases in which women were abducted and taken to Martin Luther King Park by a man driving a dark-colored sport-utility vehicle.
The most recent victim was raped at about 6:50 p.m. Monday after she was forced into the vehicle on Arkansas Street and taken to the park, where her attacker pointed a handgun at her, according to Mann.
At 1:30 a.m. Sept. 15, a man matching the description of Monday night's attacker abducted a woman on Hampshire Street and drove her to the park, where he threatened her with a steak knife.
"But a citizen came along and scared him off," Mann said, describing the abductor as black, possibly in his 20s, about 6 feet 2 inches tall and of medium build.
"People . . . should be cautious of anyone in a dark sports-utility vehicle that they don't know," Mann said.