Ontario's police watchdog is reviewing how police handled a bank robbery in Toronto in which a man was shot, apparently by police.

The Special Investigations Unit says Toronto Police received a report of a bank robbery in progress in the city's west end when the shots were fired.

Communications officer Jason Gennaro says at least one police officer fired shots, and an alleged robber was struck.

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He says at this point in the investigation, the SIU is "fairly certain" the man was hit by a police bullet.

Gennaro says the man was taken to hospital with serious injuries, and is in surgery. His life is not considered to be in danger.

Police say they're looking for a second suspect who they believe is involved in the robbery.

The SIU is automatically called in to investigate cases of death and serious injury involving police.