Mexico drug gang clashes kill 15 in border city of Tijuana

Gun battles between rival factions of a Mexican drugs cartel have left at least 15 people dead in the city of Tijuana, near the border with the US.

Police said all the dead were from the Arellano Felix cartel, which has come under pressure from a rival gang.

Two were wearing police uniforms or equipment, but are thought to have been gang members, police say.

Drug-related violence is a serious issue across Mexico. Nearly 200 people have been killed in Tijuana this year.

Investigators believe two of the dead were senior hitmen for the Arellano Felix cartel and were identified by large gold rings on their fingers.