All lanes of the westbound Long Island Expressway in Melville were closed Thursday night for about an hour because of an accident before reopening, police said.

The closure, reported at 6:08 p.m., was at Exit 49N and the reason specified on the state Department of Transportation website was "police activity."

Suffolk County police said a car burst into flames after being rear-ended by a van. The car's driver was able to get out of the vehicle as the impact pushed the van 20-30 feet from the car, police said. No one was injured and no one was charged in the crash, police said.

Earlier, a separate accident jammed traffic on the westbound LIE during the evening commute.

It was reported at 5:33 p.m., involved multiple vehicles and closed two lanes between exits 63 and 62 in Holtsville, according to the DOT.

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There were no serious injuries, Suffolk police said.

-- With Bill Mason