A two-vehicle crash shut down parts of the Long Island Expressway early Wednesday morning.

Suffolk police say the collision occurred around 2:55 a.m. eastbound near Exit 55 in Brentwood.

One of the drivers, an adult man, was critically injured and taken to South Shore University Hospital in Bay Shore for treatment.

The other man involved was hospitalized for injuries that are not considered life-threatening.

The cause of the crash was not immediately clear. All eastbound lanes remain closed at Exit 53.