SAN ANTONIO (AP) _ A spokesman for joint base San Antonio-Lackland says military-issued and personal firearms are heavily restricted on the base and that it's not clear whether a gunman involved in a murder-suicide was authorized to have a weapon.

The base's civilian spokesman, Dan Hawkins, says it's too early to determine whether the gunman in today's shooting was registered to have a weapon. Two guns were found in the room where the bodies were discovered.

A senior U.S. official speaking on condition of anonymity says the attack involved an airman who shot his commander.

Hawkins says weapons are used for training purposes and carried by base security personnel, but personal firearms cannot be freely carried on the base. He also said security officers must be notified if a personal weapon is being brought onto the installation and the firearm also must be registered, in addition to other requirements.

Associated Press writer Lolita C. Baldor in Washington contributed to this report.

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