The White House says President Barack Obama has been briefed about Thursday's plane crash in Texas.

Spokesman Robert Gibbs says the president was briefed by counterterrorim adviser John Brennan shortly before leaving the White House for a trip to Colorado and Nevada. Gibbs says the Department of Homeland Security is investigating all angles of the crash and its cause.

A low-flying small plane crashed into an office building in Austin that houses the Internal Revenue Service in Texas. Officials there say it was an intentional act by the pilot. Gibbs said it "does not appear" to be terrorism.