An airman killed his commander before apparently turning the gun on himself, sparking a lockdown at Joint Base San Antonio-Lackland in Texas Friday, a senior US official.

The shooting was not an act of terrorism, Fox News quoted an FBI investigator as saying. 

The two men were found dead in an office in Forbes Hall on the base's Medina Annex, Air Force Brig. Gen. Robert D. LaBrutta reported. 

He added that teams found two weapons at the scene, but did not say whether both belonged to the gunman.

Investigators did not identify either of the dead. Police cleared other nearby buildings.

Source: MENA