Gunmen armed with assault rifles killed five men in Apodaca, a city in the northern Mexican state of Nuevo Leon, state officials said.
The gunmen arrived at a house in Apodaca, located in the Monterrey metropolitan area, around 11:30 a.m. Sunday, a Nuevo Leon state Security Council spokesman said.
Several gunmen entered the house firing bursts from AK-47 assault rifles and 9 mm pistols.
The gunmen killed five young men, one of whom may have been a minor, the state Security Council spokesman said.
Attorney General’s Office investigators went to the scene to gather evidence and remove the bodies, which were in the dining room and bedrooms of the house.
The killings may be linked to a turf war between drug dealers, who neighbors said used the house to sell drugs, state police said.
The prison in Apodaca was the scene on Feb. 19 of the massacre of 44 inmates who belonged to the Gulf drug cartel and the escape of 29 prisoners from the rival Los Zetas gang.
The Monterrey metro area, where some 4.5 million people live, has been battered by a wave of drug-related violence that has left more than 2,000 people dead in the past year.
Los Zetas has been battling the Gulf cartel for control of the Monterrey metropolitan area and smuggling routes into the United States.