Reuters International

SYDNEY (Reuters) - Australia on Thursday introduced a new law allowing the indefinite detention of people convicted of terror-related charges and parliament is expected to approve it as early as this week.

A staunch U.S. ally, Australia has been on heightened alert for attacks by home-grown radicals, having suffered several "lone wolf" assaults, including a cafe siege in Sydney in 2014 in which two hostages and the gunman were killed and an attack by an "Islamic State-inspired" 22-year-old man on Sunday.

Australia has also sought to tighten oversight of potential threats by lowering the age of people who can be subjected to telecommunications interceptions and searches to 14.

About 100 people have left Australia for Syria to fight alongside organisations such as Islamic State, Australia's Prime Minister Malcolm Turnbull said earlier this month.

(Reporting by Colin Packham; Editing by Nick Macfie)

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 Reuters International