Six people were killed by armed assailants at a drug rehabilitation center in west Mexico's Jalisco state, authorities said Monday. Police arrived at the scene on Sunday after receiving emergency calls, but were unable to make any arrest. Read: 4 dead after sheriff’s office helicopter crash in New Mexico Witnesses told local media that hooded gunmen burst into the facility and opened fire. Jalisco state is one of the most violent areas in the country and a bastion of the Jalisco New Generation Cartel. ■