The Serious Crash Unit has been notified.
“State Highway 1 is currently closed and diversions are in place,” police said.
SH1 remains closed south of Turangi between the SH1/SH46 intersection and the SH1/SH41 intersection.
On Saturday, around 100 gang members made the 500km procession journey on motorcycles from the Head Hunters’ East Auckland headquarters to Foxton for the tangi at Motuiti marae.
Senior Head Hunter member, Hines, comes from the Foxton area and is being buried alongside other family members at the Motuiti Marae urupā at Hīmatangi.
Hines was serving a 17-year prison sentence for running a methamphetamine syndicate, but was released by the Parole Board late last year on compassionate grounds.
He was living with type 2 diabetes, which required dialysis every second day and resulted in limb amputation, heart disease and end-stage renal failure.
Hines was released from prison shortly before his 70th birthday, and had been living with a family member who provided 24/7 care in his final months.
A previous Parole Board decision noted Hines wanted to “make peace with his whānau as a consequence of his offending history on them”.