AN accused terrorism financier arrested in the US last week had just returned from a trip to Australia where he is believed to have a child. But in a security blunder, the arrest took Australia's intelligence agencies, who were unaware the man was in Australia, by complete surprise. Omar Abdi Mohamed, 41, is being investigated after allegedly receiving $454,866 from a group accused by US authorities of direct links to al-Qaida. But Australian authorities were not told of any terrorist concerns surrounding Mr Mohamed before his most recent trip to Australia, which ended only last month. "Obviously this person would...