Police hunting the killer of Manawatu farmer Scott Guy are canvassing local farmers in the hope of uncovering information about firearm thefts.
Mr Guy, 31, was found dead in the driveway of his home on Aorangi Rd, south of Feilding, on July 8.
A post-mortem confirmed he died from several gunshot wounds.
The weapon used to kill Mr Guy has not yet been recovered despite extensive searches.
Detective Inspector Sue Schwalger said today they were seeking information from the rural community about any firearm and ammunition thefts in the last 18 months.
"We know that firearms used to commit crime are often obtained illegally so it is only natural for us to canvass recent thefts in the area.
"Not all thefts are reported, so speaking direct with the farming community may provide police with vital information regarding the weapon."
Police would today hand out flyers at the Feilding stockyards.
They earlier said they were disappointed with the lack of information from the public about two cars seen near Mr Guy's house on the morning he was killed.
"The more time that goes by without these drivers coming forward the more we have to consider the movements of these vehicles as suspicious," Ms Schwalger said.
"Aorangi Rd is a rural road and there is very limited vehicle movement at that time of the morning.
"If the drivers of these vehicles were going about legitimate business we need them to come forward so that we can eliminate them from the inquiry."
No detailed descriptions of the cars were available, but both were seen driving along Aorangi Rd towards Campbell Rd, away from the location of Mr Guy's home, between 4.30am and 5am on the day of his death.
Police would still like to hear from anyone with information about three chocolate labrador puppies that went missing in the hours before Mr Guy's death.
On the day of his murder, Mr Guy got up early as usual to go milking and drove his ute to the end of his driveway.
He stopped and walked around to the front of the ute, and it was then that he was shot and killed, police said.
