Four people were killed and a fifth person critically injured in a fiery wreck in Newark, New Jersey, early Saturday, police said.

Police were called to Frelinghuysen Avenue and Evergreen Avenue just after 4:15 a.m., according to emergency responders.

The first responder reports said the deadly crash involved a tractor trailer and two cars, and that four people trapped in the autos perished from their injuries. A fifth person was taken to a local hospital in critical condition.

At least one of the victims was removed from a vehicle wedged underneath the tractor trailer, the reports said.

Investigators at the scene told the Post they are probing whether a high-speed car race may have contributed to the deadly crash.