The province's police watchdog is investigating after a man was struck by police gunfire on Tuesday in the city's downtown core.

The incident happened at about 1:30 p.m. at Victoria and Shuter Streets, next to the concert venue Massey Hall.

Police confirmed a 24-year-old man was hit by gunfire, however, not much else is known about the shooting. The man hasn't been identified.

Witness Brendan Rawlins said he saw the man being shot twice. He said that before the shooting the man charged at the police officer with an object that may have been a knife.

Representatives from Ontario's Special Investigation unit told CTV Toronto that the man was only hit once.

After the shooting, officers carried the man to St. Michael's Hospital nearby.

Allan Eaton of the SIU said the circumstances leading up to the incident are not yet known.

"We're gathering some preliminary information so that we have a sense for what's transpired here," he said.

The SIU temporarily closed Shuter Street from Yonge to Victoria. The roads reopened early Tuesday morning.

With a report from CTV's John Musselman