Montreal police are asking for the public’s help in finding a man who's been missing for three days.

Police said Jeff Francis Muzzin was last seen in the Île-Bizard neighbourhood.

Const. Simon Delorme said police have reason to fear for the safety of the 24-year-old man.

"This man might be linked to criminal activities or criminal frequentation, so this is one of the reasons we think that his life might be in danger," he said.

Delorme said Muzzin spent a lot of time around Pierrefonds and Île-Bizard.

He was last seen near the intersection of Chèvremont Boulevard and Jacques-Bizard Boulevard, police said.

Delorme said the Montreal police have asked for help from other forces.

He said a Sûreté du Quebec helicopter was in the sector Thursday, searching the riverbanks and waterways in the area.

Muzzin has long, wavy brown hair. He is 5-foot-8 and weighs about 200 pounds.