12/30/2011 01:20 EST | Updated 02/29/2012 05:12 EST

Second suspect arrested in slaying of Brampton man

York Regional Police have arrested a Brampton man wanted on a murder warrant in the death of his 73-year-old roommate.

James Martineau, 29, was arrested at about 4:30 p.m. at Union Station in Toronto as he exited a train from Montreal, police said in a release.

Martineau is charged with second-degree murder and is scheduled to appear in a Newmarket court Saturday.

Wendy Martineau, 48, of Brampton, and Rian McLean, 30, of no fixed address, were arrested earlier this week, charged with accessory after the fact to murder.

The charges came after the death of Ivan Newton Davison, a 73-year-old Brampton man whose body was found in a ditch north of Bolton on Boxing Day.

Davison's remains were discovered at about 3 p.m. Monday near Caledon King Townline South — also known as Mount Wolfe Road — in the area northwest of Toronto.

An autopsy determined that blunt-force trauma was the cause of death.

Both Martineaus and Davison lived together in a Brampton apartment. Friends of the trio have told CBC they were stunned and saddened by news of Davison's death.