The chief sniper during the Lindt Cafe siege will sue NSW Police, alleging he and fellow officers were prevented from doing their jobs and the lives of cafe manager Tori Johnson and barrister Katrina Dawson could have been saved.

The chief sniper during the Lindt Cafe siege will sue NSW Police, alleging he and fellow officers were prevented from doing their jobs and the lives of cafe manager Tori Johnson and barrister Katrina Dawson could have been saved.