Former police officer Christophe Glasl has written a memoir about his time as a member of Victoria Police's Special Operations Group (SOG).
Before the book's release on June 28, publisher Hachette described it as "Chris’s story of his life in the SOG – where solidarity, camaraderie and loyalties were undermined by bullying, bastardisation, drug use, lies and betrayal.
"It is a raw, behind-the-scenes look at what went on at the SOG, and a gripping account of major jobs he attended: fatal shootings, a triple murder, a 100-million-dollar drug bust and the Port Arthur massacre, to name just a few."
But this week, Special Operations Group has been pulled from sales after police questioned its accuracy.
In a statement issued on Monday, Victoria Police said they were aware of the book but were concerned over claims made about the 1996 mass shooting.
"We have concerns about the accuracy of the book including some of the author’s claims about jobs he attended," a Victoria Police spokesperson said.
"Of particular concern is chapter 18 which focuses on the author’s claimed involvement in the resolution of the Port Arthur massacre.
"To confirm, the former member was not part of the SOG deployment to Port Arthur nor was he even in Tasmania at the time."