Herald Sun | Sydney siege: Caller tipped off authorities two days before attack New Zealand Herald It's believed the call was made within 48 hours before the siege took place in Sydney's Martin Place Lindt store. Photo / AAP. Just days before the Lindt Café Siege which rocked the nation, an anonymous caller rang the Australian National Security hotline to ... 'Check him out': Phone call hours before Sydney siege urges ASIO to look at ... Bail for gunman's wife will be reviewed Caller rang hotline to warn about Monis - Yahoo!7 |