(CNN) A manhunt is on in Canada after two men detonated an improvised explosive device, injuring 15 people late Thursday inside a restaurant in Mississauga, Ontario, near Toronto, police said.

"There's no indication this is a terrorist attack. There's no indication this is a hate crime," Peel Regional Police Chief Jennifer Evans said during a Friday morning news conference. "At this time, we haven't ruled anything out as we start our investigation."

2 suspects attended the scene, detonated an Improvised Explosive Device within the restaurant. Several injured were taken to local hospital and 3 in critical condition were taken to a Toronto Trauma Centre. pic.twitter.com/yzCT59UVN6 — Peel Regional Police (@PeelPoliceMedia) May 25, 2018

The suspects walked into the Bombay Bhel Indian restaurant in the city outside Toronto around 10:30 p.m. and detonated the device, police said. They then fled, police believe, in a vehicle, Evans said.

Surveillance photos show the men wearing jeans and dark-colored hoodies. One had his face covered with a black cloth, police said.

Two parties, including a birthday celebration, were going on at the restaurant at the time of the blast, Evans said.

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