Jewel heist: Dargaville cops warn on bargain jewellery offers, asks for tips on fistfuls of dollars

Crime scene: Following the robbery at the Dargaville Warehouse, police are asking people to let them know of anyone suspicious offering bargain jewellery or with a lot of cash in hand. Photo/Supplied

Police are asking the public to be on the watch for jewellery offered on the cheap following the armed robbery at Dargaville Warehouse.

Also taken during the robbery on Sunday night was a ''significant quantity'' of cash, both in notes and coins, Detective Shawn House from Dargaville Police said.

It is highly likely the offenders will be looking to on-sell stolen jewellery items, he said.

Mr House is also asking people to be aware of anyone who may have large quantities of coins or notes that may seem out of the ordinary, and contact police immediately.

The police are not saying at this stage what weapons were used, or confirming the talk in the public arena that night staff restocking shelves were locked in a bathroom after the two armed men entered the building around 11pm on Sunday.

Nor have the police elaborated on how much was ''a significant quantity'' of money.

Any information given over the Crimestoppers phone (0800 555 111) and which leads to a successful prosecution could earn the caller a reward, provided they leave details of who they are. Callers can also use the line anonymously if they prefer.

The reward offer is part of the police's recent campaign to nab more offenders committing aggravated robberies.

Anyone who can assist police in their investigation into the Dargaville aggravated robbery can also contact Detective Shawn House, on 021 191 5776.