The car crash in which three Mongrel Mob members died a fortnight ago is still under investigation.
Police said a forensic examination of another blue car thought to have been involved in the crash in Hawke's Bay had been completed.
"There is still a bit more work to be done regarding this car and the forensic tests may provide us with some helpful information," Detective Senior Sergeant Brent Greville said.
Unconfirmed rumours the men were possibly run off the road sparked speculation about gang tensions but both police and the Mongrel Mob appealed for calm.
"We won't be releasing the results of these tests as they are part of the overall investigation into the crash," Detective Senior Sergeant Brent Greville said in a statement today.
The three people died when the car they were in left the road and crashed down a bank into the Mohaka River near Raupunga.
Ronald Rigby, TerryShane Stone and Nathan Isaac were farewelled at funerals last weekend.
Police said an independent crash investigator would review the police crash investigation next week.
Mr Greville said this was common in complex cases.
"We want to make sure that we have dotted all the I's and crossed all the T's and that there isn't anything that may have been overlooked in our initial assessment," he said.
