Hamilton Police are asking the public for help in their investigation into a sexual assault that occurred Friday early morning in the area of Emerson Street and Ward Avenue.

The suspect is described as a male with a large build, 18 to 23 years of age. He was wearing all black clothing with his face and head covered and he is between five-foot-eight and six-foot-two and weighs 200 pounds.

Police believe the assault could be connected to similar assault that took place on April 29 in the same neighbourhood.

"There are similarities between the two incidents that lead us to think they're linked," said Hamilton Police Acting Staff Sergeant Ryan Moore. "We have a description and the time frame."

In both cases, the male sexually assaulted a female resident in her early 20s who was alone at the time. Police say they don't know if the victims were targeted.

Sergeant Moore said that the police are asking the public to report any information they might have, to report any suspicious activity and to check security cameras for anything that might help the investigation.

"If you have any closed circuit surveillance, please check that," said Moore. "We ask people to keep their windows and doors secured and to be vigilant."

He said there were no signs of forced entry in the two cases.

The investigation continues, and anyone who is a witness or has further information is encouraged to contact Det. Phil Hedgcock at 905-540-5544.

To provide information anonymously, call Crime Stoppers at 1-800-222-8477 or submit tips online at crimestoppershamilton.com