At least seven people have been killed in an attack on a bar in the Mexican city of Ciudad Juarez

Witnesses said the bar had been surrounded by a group of about 40 gunmen before the shooting took place. It was the second time the bar had been targeted. In July 2010,two people died in a shooting there. Police said the attack was probably linked to organized crime. Ciudad Juarez has been the scene of frequent violence between rival drug cartels. The latest attack occurred in the Pronaf neighborhood. It came hours after a Mexican newspaper photographer was killed and another injured in a gun attack in the city. Both men worked for the local paper, Diario de Juarez, police said. The newspaper's editor said he did not know why they had been targeted. Authorities in north-eastern Mexico are battling a recent upsurge in violence as rival drugs gangs fight for control of lucrative smuggling routes.