MORELIA, Mexico — Drug-related violence in Mexico Monday claimed 27 lives, including 10 police officers killed in an ambush in western Michoacan state, and 17 inmates slain in prison violence in northwestern Sinaloa state, officials said. Monday's early morning ambush took place in the western town of Zitacuaro as a column of uniformed police was heading by car to Mexico City. Ten police officers and several assailants were killed in the shootout, Michoacan's Public Security Ministry said. After the attack, soldiers and police launched a manhunt for the surviving attackers, who remain at large, the ministry said. Police said the attackers removed their dead and wounded from the scene before fleeing. They did not link the shooting to any drug cartel in the region. However, Michoacan is the headquarters for the notorious "La Familia" cartel, known as one of Mexico's deadliest drug-trafficking organizations, which has a history of violent confrontations with the federal police.