CIUDAD JUAREZ, Mexico -- Authorities said gunmen have killed a police commander in Mexico's deadliest city, where a dismembered, decapitated body was found hours before.

Police spokesman Jacinto Segura said Noel Martinez was shot inside his car Friday morning. Martinez is a former military officer who was a district supervisor for the police in Ciudad Juarez, across the border from El Paso, Texas.

The city is caught in a turf war between drug cartels that has killed more than 2,000 people this year.

State prosecutor's spokesman Arturo Sandoval says authorities earlier Friday found a beheaded man in front of a university campus.

Drug violence has killed nearly 14,000 people nationwide since the government launched a crackdown on cartels in 2006.