Egypt is still holding as many as 2,400 people without charge four months after the devastating anti-Israeli bomb attacks in Sinai tourist resorts, Human Rights Watch (HRW) said Tuesday. "The state security investigation agency conducted mass arrests in northern Sinai without a warrant or judicial order, as required by Egyptian law," the New York-based group said in a report. "As many as 2,400 detainees are still being held incommunicado" following the October 7 bombings which killed 34 people, many of them Israeli tourists, in car bomb attacks on the Taba Hilton hotel and two holiday camps in Nuweiba. "The government has not released information on the whereabouts of these detainees either to their families or lawyers representing them, and has not indicated if any have been charged with crimes," said HRW.