Gunmen killed three police officers in Acapulco, Mexico, early Monday morning in attacks on two police stations, the state news agency Notimex reported.
The attacks came two days after a ferocious street gun battle that left 18 people dead, including two soldiers, CNN reported.
Mexican soldiers, in trucks and in helicopters, kept watch over the resort town Monday. Along with swine flu fears, the uptick in violence has become another obstacle threatening the tourist economy of Acapulco and other popular resort areas.
It was unknown whether the attacks were connected with Saturday's shootout, in which 15 gunmen and two soldiers were killed, and nine soldiers were wounded, the statement said.