Authorities in western Mexico say three gunmen were killed in a shootout with police after more than 40 armed assailants lobbed grenades at a federal police station.
The Michoacan state prosecutor's office says three police officers were seriously injured and two gunmen detained in the attack, which left gaping holes in the building from three grenade explosions and thousands of gunshots.
Prosecutors said in a statement that the assailants pulled up in more than 10 vehicles early Saturday in the city of La Piedad.
Michoacan has been the main stomping grounds of the La Familia cartel. The drug gang is battling a splinter group known as The Knights Templar and a weakening in its ranks after La Familia's leader was captured last month.