(c) 2013, Bloomberg News.

(c) 2013, Bloomberg News.

DALLAS Southwest Airlines said it fired the captain who was at the controls of a plane that landed nose first at New York's LaGuardia Airport in July, injuring nine people and snarling air traffic for hours.

The captain, a Southwest pilot for 13 years, took control from the first officer just before the Boeing 737 hit the runway, U.S. investigators said in August. Dallas-based Southwest ordered the first officer to undergo more training, an airline spokeswoman, Linda Rutherford, said in an e-mail Wednesday.

Southwest acted after completing its investigation into the July 22 accident, Rutherford said. The U.S. National Transportation Safety Board, which is conducting its own inquiry, previously said it found no evidence of a mechanical failure.

"As a matter of policy we have not identified the pilots and we are not discussing the specifics," Rutherford said. "We are also still in an active investigation with the NTSB."

With its nose pointed three degrees downward, the 737-700 struck the runway first with the landing gear at the front of the plane instead of settling onto the main wheels located beneath the wings, the NTSB said in a July 25 release.

The forward gear broke, snapping rearward and damaging an electronics bay. Flight 345 was arriving from Nashville, Tenn., and carried 150 people.