( CNN ) -- Two bartenders have been arrested in connection with the killing of the grandson of civil rights activist Malcolm X , according to the office of the Mexico City attorney general . Prosecutor Rodolfo Fernando Rios Garza said the men work at a bar called The Palace Club where Malcolm Shabazz and three people had drinks early Thursday . An argument ensued when the staff said the bill was $ 1,200 . Shabazz was beaten while another man was threatened and stripped of his belongings , Rios said . Shabazz , 29 , was transported to Balbuena General Hospital , where he died of his injuries later Thursday morning , police spokesman Octavio Campos said Friday . The attorney general 's office said his injuries were caused by a blunt object and included brain trauma and several broken bones . Prosecutors said there was no video of the killing because several cameras had been moved and others appeared to have been turned to face a wall . Police are looking into the actions of other people that night , the attorney general 's office said . The incident took place at Plaza Garibaldi , a rough but famous patch of Mexico City known for its mariachis . `` To all who knew him , he offered kindness , encouragement and hope for a better tomorrow , '' the Shabazz family said in a statement Friday . `` Although his bright light and boundless potential are gone from this life , we are grateful that he now rests in peace in the arms of his grandparents and the safety of God . '' A U.S. State Department spokeswoman was aware that a U.S. citizen had died in Mexico but declined to comment further . `` I was saddened , stunned , shocked , to read about the murder of young Malcolm , '' former Georgia congresswoman Cynthia McKinney said . The former lawmaker had taken Shabazz under her wing , and he had traveled with her to Libya . `` Many of my closest associates have personal memories of their time with him and of his efforts to reach out to them for help , '' McKinney said . `` He was writing a book . '' In 1997 , Shabazz -- then 12 years old -- was convicted of the juvenile equivalent of second-degree manslaughter and second-degree arson for setting the fire that killed his grandmother , Betty Shabazz , in June of that year . During his sentencing , a psychologist described him as a chronic fire-starter and a paranoid schizophrenic . CNN 's Elwyn Lopez , Mariano Castillo , Marlena Baldacci , Nick Valencia and Sunny Hostin contributed to this report .
Police are looking at other potential suspects in the case . Two bartenders at a bar where Malcolm Shabazz had been drinking are arrested . A man is shot and killed outside of his home by police officers, who say he was armed with an AK-47 assault rifle. Shabazz , grandson of Malcolm X , died of his injuries at a hospital , police say .