PM says 'system' failed public before siege

Australian Prime Minister Tony Abbott said on Sunday that "the system" had let the public down by failing to protect it from the "monster" who carried out a deadly siege in a Sydney cafe.

Abbott also foreshadowed tighter immigration controls as he released the first report into the December siege of Sydney's Lindt Chocolate Cafe, in which two hostages and the gunman were killed.

Armed with a pump-action shotgun, Iranian-born self-styled cleric Man Haron Monis took 17 people hostage on Dec 15. About 17 hours later, he shot dead cafe manager Tori Johnson, 34, prompting police to storm the building and kill him. Another hostage died in the crossfire.