From breitbart.com:
Five police officers were murdered during two separate attacks carried out by cartel gunmen in Guaymas, Sonora, on Thursday.
A convoy of cartel assassins with rifles attacked the Tactical Operations Group of the Municipal Police in Guaymas, leaving four officers dead and one seriously injured, according to local reports. An unarmed transit officer was also shot and killed. The attacks occurred shortly after noon on Thursday in Colonia Centro–an area surrounded by multiple schools–at the time students were being dismissed from classes.