2014 Sydney hostage crisis
The 2014 Sydney hostage crisis, also known as the Sydney siege and Lindt Cafe siege, occurred on 15–16 December 2014 when a lone gunman, Man Haron Monis, held hostage ten customers and eight employees of a Lindt chocolate café located at Martin Place in Sydney, Australia. Police treated the event as a terrorist attack at the time, but Monis' motives were subsequently debated. However, the findings of the Coroner in 2017 deemed the event to be a terrorist attack.
Zaky Mallah
On December 15, 2014, Man Haron Monis took hostage the staff and patrons of a Sydney coffee shop. He had a list of demands which included a demand for a flag of ISIS.
An article in the "Daily Mail"s Australian edition characterized Mallah as a "one time terror accused" described how Australian security officials sought Mallah to see if he could help them by supplying them with the ISIS flag. Mallah does not own an ISIS flag.