Information from Australian PM's aide led to clash CANBERRA, Australia (AP) - A clash between protesters and Australian police that forced bodyguards to rush Prime Minister Julia Gillard out of an event appears to have been set off by information released by one of Gillard's own aides. The aide has been fired. Gillard's office said Friday that a member of her media unit told someone that opposition leader Tony Abbott would be at Thursday's event in Canberra, the capital. A spokesperson said in a statement that the information was passed on to indigenous-rights protesters who were demonstrating nearby. The protesters were angry about recent comments Abbott made about their movement, and about 200 of them surrounded the restaurant where he and Gillard were. Gillard stumbled as she was rushed out and lost a shoe, which the protesters picked up. Gillard's office said that although the staff member had not suggested or encouraged violence or demonstration, the release of the information was "an error of judgment." Abbott told Sky News on Saturday that Gillard must reveal exactly what the fired staffer said, and to whom. He called it a "serious security breach" and an apparent attempt to "trigger something potentially dire for political advantage." "Trouble was triggered and it seems that someone from the prime minister's office had a very big hand in all of that," he said. The blue suede shoe Gillard lost was handed to a security guard at Parliament House late Friday and taken to her office.