Police investigating apparent murder-suicide in Tempe

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By Mike Gertzman By Mike Gertzman
By Mike Gertzman By Mike Gertzman
By Mike Gertzman By Mike Gertzman
By Mike Gertzman By Mike Gertzman
By Mike Gertzman By Mike Gertzman

TEMPE, Ariz. -- Police are investigating an apparent murder-suicide in Tempe.

It happened just after 9 a.m. on Monday morning at a residence near Southern Avenue and McClintock Drive.

Police responded to the scene after a neighbor called 911 to report hearing gunshots. Another witness said he saw a man outside on the ground. He thought the man might need help but he backed off when he saw blood.

Neighbors also reported hearing arguing before the gunfire.

When officers arrived they found one man outside who was shot dead and a gun nearby. They also found a second man outside who had been shot. He was transported to a hospital where he was pronounced dead.

On Tuesday, police released the names of the men who died and a possible motive.

According to investigators, Edmund Keller, 30, was shot and killed by Landis Casner, 24, both from Tempe. Casner then shot himself.

Detectives say it appears that Casner planned the shooting. Casner may have had an infatuation with Keller's ex-girlfriend. She lives out of state.

Three elementary schools in the area were on lock down as police responded to the area.

3TV is on the scene and will provide updates as more information becomes available.