More than 400 homes have been visited and 600 people questioned in the hunt for the thieves who smashed their way into Waiouru Army Museum and made off with war medals worth millions of dollars.
As the joint police-army manhunt entered its fifth day yesterday, helicopters circled above the museum and investigators questioned staff about any suspicious activity in the weeks leading up to the heist.
"It's quite obvious that the perpetrators have been in the museum lawfully before they committed this crime," museum director Colonel Raymond Seymour (retired) said.
Journalists were yesterday given a tour of the Valour Alcove, where early on Sunday thieves smashed three glass cabinets and stole 100 medals belonging to some of the country's greatest war heroes.
Police, the Defence Force and the museum have been reluctant to reveal security measures used to protect the medals, but during the tour the Herald saw one camera and a fire sprinkler.