Police in Quebec are searching a heavily wooded area in Saint-Apollinaire for Martin Carpentier.
He is the father of the two girls whose bodies were discovered this weekend following a three-day Amber Alert.
The search is focusing on the same wooded area where police discovered the bodies of six year old Romy and 11 year old Norah on Saturday.
Police are using ATVs, drones and K-9 patrols, as well as a helicopter as part of their search for 44 year old Carpentier.