Police have extradited four men from New South Wales to Queensland over their alleged involvement in a "vicious" home invasion on the Sunshine Coast.

A group of men allegedly forced their way into a unit complex on Maroochydore's Sixth Avenue on April 10, threatening a 27-year-old man and 29-year-old woman with violence and demanding money.

Sunshine Coast District Detective Inspector Chris Toohey said the men were allegedly trying to extort several hundred thousand dollars from the victims. He said the alleged offenders and victims were known to each other.

Detective Inspector Chris Toohey says the attack was "vicious and premeditated". (ABC Sunshine Coast: Janel Shorthouse)

Police will allege the victims were threatened with violence over a debt believed to be linked to a business operation and were to be held captive until the money was paid.

"They were threatened with violence to make sure that they were able to get the money they wanted," Detective Inspector Toohey said.

The five men allegedly left the unit a short time later, leaving two from the group behind with the man and woman. Police were called to the unit by concerned family and friends.

Two men, aged 30, were arrested inside the unit soon afterwards. They have since been charged with one count each of deprivation of liberty and extortion with intent to gain benefit with threat of detriment.

'Serious and premeditated' attack

On Thursday, New South Wales police executed search warrants across Sydney's western suburbs. Four men were arrested and extradited on a Queensland arrest warrant on the same charges. Detectives from the Sunshine Coast District Crime Group travelled to Sydney ahead of the extraditions.

Detective Inspector Toohey said the arrests were the result of exhaustive police work during a "complex investigation".

"This has been a protracted investigation with close cooperation between specialist detectives and regional police, in conjunction with NSW Police Force," he said.

Officers have extradited four men from NSW to Queensland. (Supplied: Queensland Police)

"This was a serious, vicious and premeditated attack and this outcome should serve as a strong warning criminal behaviour will not be tolerated."

The four extradited men arrived in Queensland on Friday and were due to face Brisbane Magistrates Court this morning. A fifth man will be extradited at a later date due to unrelated medical issues.

Police believe the group responsible was acting independently of any Sunshine Coast-based criminal network.

"We are committed to making sure organised crime and organised crime syndicates, especially from outside of the state, are held to account," Detective Inspector Toohey said. "We don't want that type of behaviour or actions here in our city."

Source: Australian Broadcasting Corporation.