Provincial police are investigating a crash that occurred Thursday afternoon in rural southwestern Ontario involving a transport truck and a farm tractor. The incident took place around 3:45 p.m. on Lambton Line, west of Florence and northeast of Dresden, in Dawn-Euphemia Township, Lambton County.

The crash led to the closure of part of Lambton Line between Pantry School Road and Gould Road. Authorities reported that one individual was airlifted to a trauma hospital by Ornge air ambulance with life-threatening injuries.

Police are asking anyone with dashcam footage or information about the incident to come forward.