09/20/2017 14:37 EDT | Updated 09/20/2017 15:01 EDT

Quebec police find body they believe is 71-year-old man tied to Amber Alert case

MONTREAL — Quebec provincial police say they have found a body investigators believe is that of a missing 71-year-old man connected to last week's Amber Alert case.

Sgt. Claude Denis says an autopsy will be conducted in order to determine if it is Yvon Lacasse, who has been missing since his car was stolen Thursday night in Lachute, Que.

Denis says police found the body in Arundel, Que., 100 kilometres northwest of Montreal, after several days of searching for the missing man.

He says all signs point to it being Lacasse, but that can only be confirmed by a coroner.

A six-year-old boy who was the subject of an Amber Alert case was found in Lacasse's stolen vehicle in eastern Ontario on Friday.

Police called the Amber Alert after the boy's mother was found dead last Thursday in a home in Saint-Eustache, Que.

Roughly 24 hours later, Ontario provincial police stopped the stolen vehicle near Renfrew, Ont., and arrested the father.

The 41-year-old suspect has been charged with second-degree murder and is currently hospitalized in Ottawa after an alleged suicide attempt.