The decapitated bodies of four men were hung from a bridge Sunday in a Mexican city which is the battlefield of two drug lords.

The beheaded and mutilated bodies were hung by their feet early Sunday from the bridge in Cuernavaca, which is a popular weekend getaway for Mexico City residents.  Cuernavaca has become a battleground for control of the Beltran Leyva cartel since its leader, Arturo Beltran Leyva, was killed after a shootout with Marines earlier this year in December.

A gang led by kingpin Hector Beltran Leyva took responsibility for the killings in a message left with the bodies, the attorney general’s office of
Morelos state said in a statement.

The message left with the bodies threatened:

“This is what will happen to all those who support the traitor Edgar Valdez Villarreal.”

Authorities said the four men had been kidnapped days earlier. The family of one of the men reported the abduction to police. In western Mexico, police found the body of a U.S. citizen inside a car along the highway who was later on identified as a Georgia resident.

While, the U.S. Embassy could not be reached to confirm the man’s identity, police say they have no suspects and had not determined a motive.

Is it time for the U.S. to step in and do something about this drug war?