Greazy Dog members are discrediting claims linking them to murdered man Mitchell Paterson.

The claims come after a police investigation was launched into the suspicious death of Mitchell whose body was found at McLaren falls on Friday.

The 26-year-old Ngaruawahia local's Facebook page shows links to several gangs including a video of the Greazy Dogs.

But a Greazy dog member, who did not disclose his identity, says Mitchell is not a member.

'Our whole club is getting very frustrated, Paterson had no association with us whatsoever.

'The video on his page was uploaded, yes, that's perfectly correct, and there may have been a couple of comments, but just because a video was uploaded from his phone does not make him an associate or a member of the Greazy Dogs motorcycle club.”

He says he's been receiving continual phone calls from people offering their condolences.

'Friends in this country and as far as Germany have been calling me, telling me sorry for the loss of my brother. We didn't even know the guy.”

Mitchell is one of three Waikato men to have died in suspicious circumstances in the past two weeks.

Speaking at press conference at Hamilton police station on Wednesday, Detective Inspector Graham Pitkethley says there are significant criminal gang links across all three homicides.

'It's a coincidence in regards to the homicides all happening in a short space of time,” he says.

'There are links through the enquiries in regards to the people that are involved and associated with gangs and organised crime groups.”

He could not confirm the specific names of the gangs in the press conference.