OPP have laid charges in a fatal collision on Highway 401 that killed two people, including a 13-year-old girl.

Leszek Urbaniak, 57, of London is charged with two counts of dangerous operation causing death. The charges are in connection to a crash on Highway 401 on May 10 in Chatham-Kent.

Alyssa Smulders, and her 35-year-old uncle, Marc Lafontaine, were killed when a westbound tractor trailer crossed the centre median of the highway, striking their eastbound vehicle.

Urbaniak will appear in a Chatham court on July 8.