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Smoke billows from derailed train in Maryland

Patrick Semansky / AP

A fire burns at the site of a CSX freight train derailment, on May 28, in White Marsh, Md., where fire officials say the train crashed into a trash truck, causing an explosion that rattled homes at least a half-mile away and collapsed nearby buildings, setting them on fire.

Patrick Semansky / AP

A fire burns at the site of a CSX freight train derailment, on May 28, in White Marsh, Md.

James Lebrun / AP

This still taken from video provided by James LeBrun shows an explosion outside Baltimore on May, 28.

By Andrew Rafferty and Tracy Connor, NBC News

A freight train derailed outside Baltimore after colliding with a tractor-trailer on Tuesday afternoon, sending a huge plume of smoke billowing from flaming wreckage.

Fifteen cars from the CSX-owned train were derailed and two were on fire following the accident, according to Baltimore County officials. Images from the scene revealed nearby buildings sustained substantial damage from the explosion. Continue reading.

Patrick Semansky / AP

A fire burns at the site of a CSX freight train derailment, on May 28, in White Marsh, Md.

Charles Dharapak / AP

Mark Paugh carries his 15-month-old son Ryan as they watch smoke from a train derailment in White Marsh, Md., on May 28, in Rosedale, Md.

Patrick Smith / Getty Images

Windows and a garage door of a nearby business are blown out from a train derailment that caused a major explosion in the Rosedale neighborhood on May 28, in Baltimore, Md. Residents in nearby neighborhoods were advised to voluntarily evacuate.