Anti-1080 activists claim police have been asking for bank statements and searching their computers for spelling mistakes, as well as taking fingerprints and DNA in the nationwide hunt after the 1080 baby formula threat.
The Greymouth Star reported earlier this week detectives were calling on known anti-1080 activists, including seeking access to their computer hard drives.
Anthony Broad, apparently from Dunedin, said on Facebook the police also wanted bank statements showing transactions for the period November 20 to 27.
He said that was "in order to look for evidence for or against one's presence at certain undisclosed locations relevant to the inquiry".
He also alleged police wanted to "connect a device to my computer which would automatically search the whole hard drive for certain sentences (including particular spelling mistakes apparently) that were in the (threatening) letters allegedly sent to Federated Farmers and Fonterra".