A man who allegedly followed a woman through the Upper Canada Mall in Newmarket, Ont. on Dec. 22, 2015, before sexually assaulting her in the parking lot is now linked to four other similar incidents in Newmarket, according to York Police. He is seen in a still image from mall surveillance video. (Upper Canada Mall/York Regional Police)

York Regional Police have linked a man wanted in connection with a sexual assault at Upper Canada Mall to four other similar assaults in Newmarket. 

Police are looking for a man who allegedly struck a 59-year-old woman on her buttocks in the parking lot of the mall in Newmarket on Dec. 22.

Investigators believe the incident is connected to four other similar assaults on women between August and September 2015, and police have released new surveillance video of the suspect.  

On August 18, the man was captured on surveillance video following a 19-year-old woman pushing a stroller through the north parking lot of Upper Canada Mall. 

In the video below, he approaches her, hits her buttocks and runs north towards Matthew Boyd Crescent. 

A month later, on September 8, the man was caught on camera by a home's security camera system following a 17-year-old woman on Gail Parks Crescent.

Police say he grabbed her buttocks off camera, and then was seen on camera running away. 

The man is described as white, between 18 and 25 years old, with a thin build. He is between five feet, five inches tall and five feet, seven inches tall and weighs between 125 and 130 pounds. At the time he was wearing a blue jacket, camouflage pants, a black leather baseball hat and running shoes. 

Anyone with information is asked to call the York Regional Police's special victims unit at 1-866-876-5423 x7071 or Crime Stoppers at 1-800-222-TIPS.