Fairfield police are still investigating the cause of a head-on collision on Route 139 in Fairfield on Saturday that killed a Norridgewock man.

The man who died in the crash was identified Sunday as Jesse Quiron-Demo, 30. Police believe his car crossed the centerline around 2:15 p.m. Saturday on Norridgewock Road and hit a H.P. Hood tractor-trailer truck driven by Kyle Knox, 31, of Winterport.

Quiron-Demo died at the scene, said Fairfield Patrolman Casey Dugas. Knox wasn’t injured in the crash.

Dugas said police are still investigating the crash, but no charges are expected to be filed.