An inquest into the Sydney Lindt Cafe siege is poised to enter its final stage.
The final segment opening on Monday morning is set to examine the siege itself, including how it was managed and responded to by law enforcement.
The process is expected to span at least eight weeks.
Counsel assisting, Jeremy Gormly SC, is expected to deliver his opening address on Monday before the officer in charge of the coronial investigation is called to give evidence.
Witnesses to events which occurred immediately before the siege are also due to appear.
So too are police officers who were first to respond to the siege.
The Sydney siege began when gunman Man Haron Monis entered the central Sydney Lindt Cafe on the morning of December 15, 2014, and took 18 people hostage.
Lindt Cafe manager Tori Johnson and lawyer Katrina Dawson both lost their lives in the 17-hour stand off.
Monis was killed when tactical police stormed the cafe in the early hours of December 16.
State Coroner Michael Barnes is expected to hand down his findings later in the year.