Police are investigating three possibly related robberies that occurred on or near the University of Michigan campus Thursday night, all of which involved men stealing electronics from unsuspecting victims.

The first incident occurred at about 7:20 p.m. Thursday at the C.C. Little bus stop, 1100 Geddes Ave. According to U-M police spokeswoman Diane Brown, a student allowed a man to use his cell phone and the man ran away with the phone.

In the second incident, a 20-year-old Ann Arbor man had his cell phone taken from his hand while he was speaking on the phone late Thursday walking near campus. Ann Arbor police Lt. Renee Bush said the man was walking north at about 10 p.m. in the 700 block of South Forest Avenue while talking on the phone.

Bush said two men were walking toward the man on South Forest when one of them reached out and ripped the phone from the man’s hand. The man who took the phone ran across the street and fled the area while his accomplice continued to walk down South Forest, Bush said.

The victim suffered a hand injury while attempting to resist the theft and sought medical attention from the University of Michigan Hospital, Bush said.

The third incident took place at about 10:40 p.m. Thursday in a hallway at South Quad, Brown said. A student was sitting on the hallway floor with earbud headphones in her ears while working on a laptop when a man approached her, Brown said.

The man yanked the headphones out of her ears and took the connected laptop, running out the front door and joining two other men on foot, Bush said.

Police released suspect descriptions for each of the incidents. The man in the first incident is described as black, between 22 and 25 years old, about 5-feet-7 inches tall with a medium build, wearing all dark clothing including a dark hooded sweatshirt. In the second incident, the men were described as black, between 20 and 22 years old, between 5-feet-8 inches and 5-feet-10 inches tall and wearing black or gray hooded sweatshirts, Bush said.

In the third incident, the man was described as black, about 6-feet-1 inch tall with short hair worn in cornrows, wearing a blue hooded sweatshirt, blue jeans and dark gray athletic shoes.

Anyone with information on any of these incidents is encouraged to call the Ann Arbor police anonymous tip line at 734-794-6939 or the University of Michigan Department of Public Safety at 734-763-1131.

Kyle Feldscher covers cops and courts for AnnArbor.com. He can be reached at kylefeldscher@annarbor.com or you can follow him on Twitter.