BROOKLINE - A Nashua man is hospitalized in critical condition after a crash late Wednesday afternoon on Route 13, near Averill Road.

Raymond Beauregard, 20, was driving a 2007 Honda Civic north on Route 13 just after 4:30 p.m. when his car crossed into the southbound lane and was struck by a 2012 Freightliner van operated by James Keavney, 62, of Fitchburg, Mass., police said.

Beauregard was taken by Brookline Ambulance to St. Joseph Hospital in Nashua and later transferred to the Lahey Clinic in Burlington, Mass., for medical treatment. Police Chief Bill Quigley said Beauregard was not wearing a seat belt and, as a result, had to be extricated from under the dashboard.

Beauregard was in critical condition Wednesday night, but Quigley said Thursday morning that police have not heard from the hospital concerning how he is doing this morning. Keavney was not injured in the crash.

The road was extremely icy at the time of the accident, police said, but what caused it remains under investigation. Anyone who witnessed it is asked to call police at 673-3755.