According to the report of Mexican newspaper Milenio, the gunmen started shooting at the four journalists near a pizza place without any warning, killing them as a result, including Alan Gonzalez, the head of the Megaradio broadcaster.
This was the latest episode of a wave of violence in Ciudad Juarez in the northern state of Chihuahua in recent days. Two women were earlier killed in a store in a Molotov cocktail attack by unknown assailants.
According to local authorities, unknown gunmen also fired at the prosecutor's office building and set a truck on fire.