Mexico police chief stands down

The chief of police in Ciudad Juarez, a Mexican border city wracked by drugs-related violence, has stepped down amid ongoing threats, reports say.

Roberto Orduna reportedly offered to resign hours after a police officer and a prison guard were killed.

Criminal gangs had threatened to kill at least one police officer every two days until Mr Orduna quit.

Murders are frequent in Ciudad Juarez, which sits on the US border and is a key staging post on the drug route.