Peel Regional Police say they are searching for a missing Mississauga man “believed to be in possession of firearms and in a state of crisis.”

Investigators say 33-year-old Rubens Mukja was reporting missing from the Westminster Place and Rathburn Road East Area of Mississauga on Sunday morning at 9:40 a.m.

“The family brought forward some concerns about Mr. Mukja being in crisis,” Insp. Raj Biring said.

He was last seen on Saturday at 10:30 p.m. on foot.

Mukja stands five-feet-nine inches tall, with a medium build and short brown hair.

“We are concerned that he may be in possession of some handguns, some firearms, more than one,” Biring said.

He was last seen wearing an olive green windbreaker, white running shoes and a black backpack.

“This is unusual for him and out of character,” Biring said. “We have considerable resources committed to this incident and we will be here.”

He should not be approached and anyone who sees Mukja should call 911 immediately.