Mexico night club attack leaves 15 dead: Prosecutor

Four more men suffered injuries, public prosecutor's office spokesman Juan Jose Martinez told AFP.

It was not immediately clear who committed the crime. Before sunrise, a group of armed men pulled up in three vans at the La Playa Men’s Club in the city of Salamanca, burst into the premises and opened fire, local media reported.

Powerful oil theft gangs have stolen vast quantities of fuel from Salamanca’s oil refinery. This week President Andres Manuel Lopez Obrador launched a major offensive to capture local gang leader Jose Antonio Yepez, known as “El Marro.” A video taken after the shooting from the street near the bar showed a line of police vehicles. A woman wailed uncontrollably in the background as an ambulance drove into the area.

The nightclub lies in Guanajuato state, where authorities have launched an operation against criminal gangs involved in fuel theft.