TORONTO (CNN) — Two hooded suspects detonated an “improvised explosive device” on Thursday, injuring at least 15 people inside a restaurant in Mississauga, Ontario near Toronto, police said.

Peel Regional police say the suspects walked into the Bombay Bhel Indian restaurant about 10:30 p.m. local time, detonated the device and fled.

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Surveillance photos show two suspects wearing jeans and dark-colored hoodies. One of them had his face covered with a black cloth, police said.

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Among those injured, three people suffered critical injuries and were taken to a Toronto trauma center, officials said.

Their injuries were “consistent with those of an explosion,” said Brian Gibson, deputy chief at Peel Regional Paramedic Services.

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