York Regional Police and two partners have offered a $10,000 reward for a suspect in the robbery of six financial institutions in the past two years.
The robberies have been committed in Whitchurch-Stouffville, Oshawa and Belleville, according to a news release.
"In all six of the robberies, the suspect enters the branch, produces a note indicating he is armed and demands money," it said.
"However a weapon has never been seen. Investigators believe these robberies were committed by the same suspect."
The Canadian Bankers Association and Central 1 Credit Union are partnering with police.
Anyone with information is asked to contact the York Regional Police Hold-Up Unit at 1-866-876-5423, ext. 6630, Crime Stoppers at 1-800-222-TIPS, or leave an anonymous tip online at www.1800222tips.com.