March 17 (UPI) -- Mexican authorities have arrested a 14-year-old boy nicknamed "El Chapito" after the infamous Mexican drug lord on accusations of being involved in the shooting deaths of eight people.

The North American nation's Public Safety Department announced the arrest Thursday in a statement.

Authorities said the unidentified boy was one of two people who opened fire on a family celebrating a birthday in the Fundidores neighborhood of Chimalhuacan, a city just northeast of Mexico City, killing eight people and injuring seven others, including a 3-year-old child.

Police said the boy was among nine people arrested during a 12-hour operation between late March 10 and early Saturday in Chimalhuacan and nearby Nezahualcoyotl city.

One other person was charged in connection to the shooting while the rest were charged with drug-related crimes, the department said.