Two critical after five-car crash on Melbourne freeway

Two people are in a critical condition after a five-car collision on the Monash Freeway in Melbourne.

The cars collided near the Stud Road off ramp just after 2pm police said.

Five people were taken to hospital, including an adult and boy from one vehicle who are in a critical condition.

The boy was rushed to the Royal Children's Hospital and the woman in her 40's taken to The Alfred.

Two people are in a critical condition after a five-car collision on the Monash Freeway in Melbourne.

Both have injuries to their upper bodies.

All out-bound lanes and one in-bound lane of the Monash Freeway are closed.

Police are investigating.