Dhaka, Dec. 15 -- At least 12 people were killed and almost 30 wounded when gunmen fired on a Jewish holiday event at Sydney's Bondi Beach on Sunday in what Australian police and officials described as a terrorist attack.

One suspected gunman was killed and another was in a critical condition, New South Wales Police Commissioner Mal Lanyon told a press conference. At least 29 people injured, including two police officers, were taken to hospital, he said.

Police were investigating whether a third gunman was involved in the shooting, and a bomb-disposal unit was working on several suspected improvised explosive devices, Lanyon said.

Mike Burgess, a top Australian intelligence official, said one of the suspected attackers was known to autho...