Acting Detective Senior Sergeant Rob Huys said the investigation team were following up the more than half a dozen calls received after the screening on Police Ten 7.
"The team are really appreciative to the public for getting in touch and providing further information."
Meanwhile, Northland police continue to investigate two further aggravated robberies that both happened on Anzac Day.
Police are still trying to track the offender of an aggravated robbery at the Normanby Street Mobil service station at about 8.45pm on Anzac Day. The sole attendant handed over cash and the offender, who was armed with a knife, then fled on foot toward Parore St.
In another serious crime, two people were bound and left in the office of Ruakaka Tavern after they were confronted by two people after closing time about 11pm on Wednesday. The two victims were forced to open the safe and the thieves took cash and drove off in the victims car that was later found at Marsden Cove.
• Anyone with information on any of the cases can call Dargaville Police on 09 439 3400, Whangarei station 09 430 4500, or Crimestoppers anonymously on 0800 555 111.
