Toronto police say a man in his 20s was shot several times around 10 a.m. in the parking lot of the strip mall at 2221 Jane St.
He was rushed to hospital, where he remains in critical condition.
Police are searching for a suspect — described as a black man, about 25, wearing a grey sweatshirt and blue pants — last seen running northeast from the area.
Police are interviewing witnesses. Anyone with information is asked to contact 31 Division at (416) 808-3100 or Crime Stoppers at (416) 222-TIPS.