A fatal crash in Burlington early Tuesday closed the westbound lanes of the QEW at Walker's Line.

The OPP say a man was killed when the Toyota Matrix he was driving collided with the rear of a tractor trailer at about 2:15 a.m. He was pronounced dead at the scene.

The westbound lanes of the QEW were closed just past Walker's Line while police reconstruction teams completed their investigation. The lanes reopened just before 9 a.m.

At the time of the crash, the OPP was on scene conducting speed patrols while maintenance crews worked in the area.

The OPP says the Special Investigations Unit has been notified. There is no information yet about the victim.

The SIU investigates all reports involving police where there has been death, serious injury or allegations of sexual assault.