A motorist was killed late Thursday in a fatal crash on the Beltway in Montgomery County, police said.

At around 11:50 p.m., officers responded to the scene of a two-vehicle collision on the inner loop of I-495 at Seminary Road before Georgia Avenue, Maryland State Police said in a statement. They found a 2004 Honda Civic, which had been traveling at high speed, slammed into the rear of a tractor trailer and lodged beneath.

The Honda’s driver, identified as Reza Zati of Jessup, Md., was pronounced dead at the scene.

Police said it was not yet known whether alcohol or drugs played a role in the crash.