( CNN ) -- A plane crash Tuesday killed six public servants working for Mexico 's attorney general 's office , officials said . The crash in Zacatecas state occurred a day after the authorities onboard had carried out an arrest warrant against several suspected members of the Zetas cartel , Attorney General Jesus Murillo Karam said in a statement . Authorities are investigating what caused the crash of the plane , which belonged to his office , Murillo Karam said . The plane did not return to Mexico City as scheduled on Monday due to mechanical problems , he said . Instead , the plane headed back to Mexico City at noon Tuesday . It crashed 10 minutes after takeoff , Murillo Karam said . Two federal police agents and an agent working for the organized crime investigation branch of the attorney general 's office were among the casualties . The plane 's pilot , co-pilot and a mechanic also were killed . CNN 's Rene Hernandez and Catherine E. Shoichet contributed to this report .
Police agents and an organized crime investigator are among the casualties . Crash occurs a day after authorities carry out an arrest warrant against suspected Zetas . Plane had mechanical problems the day before .