More than 50 police officers are still working to find a fleeing suspect following a dramatic incident in Gore.
The offender, Hori Gemmell, is sought after two police glock pistols were stolen and two police vehicles were rammed on Wednesday night during a pursuit.
Southern District Commander Superintendent Paul Basham said on Friday a tip-off at Invercargill Airport in the morning turned out to be a look-a-like, and the manhunt is continuing.
Police confirmed a search of the plane had been conducted, and Gemmell wasn't there.
"We are going to be here for as long as it takes," Supt Basham said. "That means will be roaming across the district in pursuit of Mr Gemmell, and of course the safe and swift recovery of those firearms."
Ten properties have been searched following the dramatic incident. Supt Basham said the National Specialist Search Team is helping with the manhunt.
A passenger onboard a flight which was raided by police this morning said the man mistaken for Gemmell was mortified by the ordeal.
Melissa Vining said the man was taken off for questioning.
"They talked to him outside the plane and then he got back on the plane and we left," Vining told Newshub.
"He just looked mortified, as you would, if you were getting pulled off a plane and you had no idea why."
Gemmell is dangerous and should not be approached, police said.
"We ask that anyone who has information about Gemmell's whereabouts, or who may have seen him, call 111 immediately or Crimestoppers anonymously, or Gore police station on (03) 203 9300," Supt Basham said.