TEHRAN, Young Journalists Club (YJC) - The incident took place in the city of Salamanca in Guanajuato state, where authorities have launched an operation against criminal gangs involved in fuel theft.
The armed men fled the La Playa club -- located in a residential and commercial area of the city -- in an escape car, prosecutors said, adding that an investigation had been opened.
Witnesses told authorities that the assailants were masked.
The victims have not yet been identified.
The attack occurred just hours after President Andres Manuel Lopez Obrador made a working visit to Guanajuato, where he spoke on Friday about his strategy for putting a stop to fuel theft.
On Saturday, Lopez Obrador said he regretted the "loss of innocent lives."
"We are fighting to bring peace to the country," he told reporters.
Source: AFP