Ciudad Juarez: Authorities said that 20 people were killed in less than 24 hours in Mexico`s most violent city, Ciudad Juarez, which borders the US state of Texas.
The first of three separate attacks by armed groups was late Thursday when five people were killed at a bar called La Barritas.
Witnesses described several armed men opening fire from outside the building before Molotov cocktails were thrown inside, according to local press reports.
The victims were two men, two women and a fifth person "burned so badly that it was impossible to determine the sex”, a forensics expert said on condition of anonymity.
Ten people were killed late Thursday into Friday at another bar, El Castillo, near the border crossing with the United States, officials in the state of Chihuahua said.
Witnesses said more than a dozen gunmen dressed in black entered the bar and opened fire. The bar is located near the Zaragoza International Bridge linking Ciudad Juarez to the city of El Paso in Texas.
Separately on Friday, gunmen fired at a food stand on the street, killing four men and a 10-year-old boy, a police officer said.
Ciudad Juarez is considered the most violent city in Mexico, with more than 3,100 homicides in 2010. Most of the violence is blamed on drug cartels who fight for control of lucrative drug routes into the United States.