Lambton OPP are warning motorists of a potentially deadly activity taking place on the 402.

Sunday night, shortly after 11 pm, several vehicles were struck by debris tossed from the Murphy Road overpass.

Three vehicles were damaged by garbage, and metal pipes. Fortunately there were no injuries.

Authorities point out the danger of a vehicle traveling at high speed getting hit with an object.

If you have any information you are asked to contact the OPP at 1-888-310-1122.