Bay of Plenty Police officers are among 20 involved in the investigation of a police shooting of a 50-year-old man near Kerepehi on Tuesday.

The investigation is being described as a 'complex case requiring the interviewing of a large number of people and the completion of extensive forensic examinations”.

A 50-year-old man shot by police is still to be interviewed.

The independent senior investigator overseeing the case, Detective Inspector Mark Loper, says around 20 officers from across the Waikato, Bay of Plenty, Auckland and Counties Manukau Police Districts are involved in the investigation.

'The 50-year-old Kerepehi man wounded on SH2 during Tuesday night's incident is yet to be formerly interviewed by detectives and is expected to undergo further surgery in Waikato Hospital today,” he said.

'A large number of Police staff and members of the public continue to be spoken to by investigators and these interviews are expected to continue through to the end of next week.”

Mark says significant forensic examinations are also still underway, including an examination of the offender's car which will continue later today.

He added: 'Following media coverage of us wanting to speak to drivers who may have been turned away from the scene on SH2 about the time of the shooting, we have spoken to one motorist but we would like to speak to anyone else who may have seen or heard what occurred.

'While we have gathered a large amount of information from our own staff and other parties involved in the incident, independent witnesses offer real value to investigators piecing together exactly what happened.”

Anyone who saw or heard matters related to Tuesday night's shooting is asked to contact the inquiry team at the Paeroa Police Station on: 07 862 8744

Alternatively, information can be left anonymously via the Crimestoppers line on: 0800 555 111.