A Quebec boy who was the subject of an Amber Alert has been found safe by police in Ontario.

Ontario Provincial Police arrested Ugo Fredette after the pair were found near Dacre, Ont.

Fredette will appear in an Ontario court for a bail hearing at 10 a.m. via video conference.

Police used a spike belt to disable the Honda CR-V Fredette was driving, and arrested him after a brief chase on foot.

Police are now looking for Yvon Lacasse, 71, who is connected to a Honda CRV that Ugo Fredette was driving at the time of his arrest. (Sûreté du Québec ) Asselin said police are now searching for 71-year-old Lachute, Que., resident Yvon Lacasse, whose SUV the Fredette was driving at the time of his arrest.

Lacasse is described as bald with brown eyes. He is five feet four inches tall and weighs around 155 pounds.

Police said Lacasse could have been dropped off by Fredette along his route from Lachute, which took him through Maniwaki and Rouyn-Noranda before entering Ontario.

Asselin said police are concerned for Lacasse's safety and they are asking for the public's help to find him.

Nearly 24 hours of uncertainty

The six-year-old boy went missing around 5:35 p.m. ET Thursday.

The Amber Alert was issued for the boy after a woman was found dead at a house on Antoine-Séguin Boulevard in Saint-Eustache.

Police have classified Véronique Barbe's death as a homicide, but did not release any details.

Police forensic investigators examine a home in Saint-Eustache, Que., where Véronique Barbe was found dead. (Graham Hughes/Canadian Press)

Fredette's white pickup truck was found abandoned in the early morning hours of Friday at a roadside rest stop in Lachute, Que., northwest of Montreal.

That's where it's believed the pair encountered Lacasse and Fredette commandeered the dark grey Honda CR-V that he was driving.

Fredette then stayed at a motel in Rouyn-Noranda at some point Thursday night, police said.

Quebec provincial police comb the area near where the truck was found looking for clues. (Charles Contant/CBC)

On Friday morning police were searching two scenes: one in Lachute, at the rest stop where the truck was found, and the other in Saint-Eustache, where Barbe was found dead.

A team of police divers and a canine unit were involved in searching the Lachute scene and the Rivière du Nord that runs through the area.

The search eventually spread to Ontario after reported sightings there.

Provincial police finally caught up with the two around 5 p.m. Friday along Highway 132 near Dacre in the Ottawa Valley region.