Three people were killed Saturday following a head-on collision on Route 117 near Rivière-Héva, in Quebec's Abitibi-Temiscaming region.

Paul Ottereyes, Stella Polson and Philippe Boutin died after their vehicles were involved in the accident. The Sûreté du Québec confirmed their identities in a press release.

A fourth person was involved in the crash but their condition isn't known.

Ottereyes, 53, was from Waswanipi, in the James Bay Cree territory.

Polson, 31, was originally from Timiscaming First Nation, but had lived in Waswanipi for several years.

Boutin, 77, was a former mayor of Lorrainville.

The accident happened Saturday around 12:45 p.m. on Route 117. One of the two vehicles was trying to pass, and collided head-on with a car coming in the other direction.

On Tuesday, Quebec provincial police updated their initial report on the collision, saying three vehicles were involved in the incident.

Three people were travelling in the first vehicle. Two died and the other was injured. Two people were in the second vehicle. One person died and the second was injured. Neither of the two people travelling in the third car were harmed in the collision, a spokesperson for the Sûreté du Québec said Tuesday.

Police are investigating the causes and circumstances of the collision.

Route 117 was closed for several hours after the accident.