UPDATED 5.38PM: Pressure is mounting on the government to launch an inquiry into allegations New Zealand soldiers committed during a raid on Afghan village in 2010 which killed civilians, including a three-year-old girl.

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Investigative journalists Nicky Hager and Jon Stephenson alleged in their book Hit & Run, released last week, that SAS troops killed six innocent villagers and injured 15 others in Baghlan Province in 2010 during a revenge raid after the death of Timothy O'Donnell.

The book also alleges that details of the botched raid, which failed to kill any insurgents at all, were covered-up by the New Zealand Defence Force.

The authors of Hit & Run, opposition parties, and top lawyers have been pushing for an inquiry.

Both the government and the NZDF have repeatedly denied that civilians were killed, citing an investigation carried out by the International Security Assistance Force (ISAF) in 2011, clearing Kiwi troops of wrongdoing.

Prime Minister Bill English will meet with Defence Force Chief Tim Keating and Defence Minister Gerry Brownlee tomorrow when they return from a trip inspecting New Zealand's training contingent in Iraq, after which they are expected to make a decision on whether an inquiry takes place.

"We're taking a considered approach to it," English said. "We're not going to be rushed in by a public relations blitz." 

The Prime Minister today reiterated his faith in the Defence Force.

"We haven't indicated that they have acted outside their rules, or any indication they haven't acted with complete professionalism," he said.