15 people were killed at a car-wash in the western Mexican state of Nayarit, the state attorney general's office said

The attack happened at a business called the Gamboa car-wash in the capital, Tepic, and is presumed to be the work of a drug cartel, according to local police. A man had been killed the night before in the same area, police said. Initial reports by investigators said witnesses heard gunfire only two blocks away from the offices of the federal police. The federal police responded to the scene to find 15 people dead, including clients and employees of the car-wash. Investigators found hundreds of shell casings from assault rifles. The mass slaying resulted in the closure of nearby businesses and schools.