Five women who were walking alone outdoors were sexually assaulted in the midtown area since January in separate incidents, police said.

The series of assaults — between January to April — occurred in the area of East 22nd Street and South Craycroft Road, said Sgt. Chris Widmer, a Tucson Police Department spokesman.

The attacks happened between 11 p.m. and 7 a.m., and are possibly related, Widmer said. In four of five of the attacks, the man was armed with a weapon.

The victims described the suspect as either a light-skinned Hispanic or white man who is between 25 to 30 years old. He is about 5 feet 4 inches tall to 5 feet 6 inches tall, said Widmer.

The man has a thin build and weighs between 110 to 140 pounds. He has short brown hair, a light mustache and acne or pock marks on his face.

Police advise people to walk in pairs or in a group whenever possible, and to remain aware of their surroundings. Police also ask that suspicious activity be reported.

Anyone with information is asked to call 911 or 88-CRIME.