Mexico City, Sep 28 (IANS/EFE) Gunmen stormed a police headquarters in the northern Mexico and escaped with around 70 firearms, officials said.

The criminals took assault rifles, pistols and tactical equipment from the state police headquarters in Chihuahua early Monday, an official spokesman said.

No one was hurt in the robbery and the gunmen only threatened the officer in-charge of the storage area, Chihuahua Public Safety Secretariat spokesman Fidel Banuelos said.

The incident is ‘unprecedented’ because this is the first time that a state police facility has been stormed, Banuelos said.

According to official figures, Chihuahua is Mexico’s most violent state. The northern state is home to Ciudad Juarez, Mexico’s murder capital, where more than 8,000 people have been killed since December 2006.