Gunmen in north-central Mexico assaulted a house and killed five family members, including a 14-year-old boy, and wounded an 8-month-old baby, authorities said on Sunday.
Prosecutors in the state of Guanajuato said the killings occurred on Saturday in the town of Apaseo El Grande, where drug gangs have been fighting turf battles.
Three women, one man and the boy, all presumed to be related, were found dead of gunshot wounds.
The baby was taken to a hospital for treatment of a bullet wound to the arm.
A handwritten sign with a message making reference to a drug gang was found at the home.
In the nearby city of Silao, police said Sunday they found three men and one woman shot to death at another home. Plastic bags apparently full of meth were found at the house.