4 people beheaded among 13 slain around Acapulco
March 13, 2010 18:45 EST

ACAPULCO, Mexico (AP) -- At least 13 people have been killed in a Mexican Pacific coast state plagued by drug gang violence.

Guerrero state police say the dead include two decapitated men whose bodies were left on a scenic road packed with nightclubs in the resort city of Acapulco.

In a separate incident, gunmen killed five police officers patrolling in Tuncingo, a rural community outside Acapulco. In the same area, police found bullet-ridden bodies of five men, including two who had been beheaded.

Another man was found shot to death on the edge of Acapulco.

Police named no motive for the killings early Saturday. It is unclear if they were related.

Guerrero state is a key battleground for Mexico's brutal drug cartels.