Man shot by police after threatening them with a gun in Massey

A man who prompted an Armed Offenders Squad callout in West Auckland was shot after he threatened officers with a gun, police say.

Police were called to Mānutewhau Road in Massey around 7.49pm on Thursday amid reports the man had a long-barrelled weapon.

He had allegedly also pointed it at a neighbour.

A cordon was established around a home where the man was believed to be living, at which time police say he fired at them.

"No police staff were struck or suffered any injuries," Waitematā District Commander Acting Superintendent Matt Laurenson said.

Police said negotiators tried to talk to the man, but that he didn't comply.

A series of others options were used to assist, including sponge rounds and Tasers, but these had no effect on the man, and his behaviour has continued to escalate.

Police used a battering ram to enter a house on Manutewhau Road about 10.45pm on Wednesday. An RNZ reporter at the scene said several loud bangs were heard, accompanied by bright flashes.

The man was then shot by police.

The 55-year-old is in a serious but non life-threatening condition under police guard in hospital and will undergo surgery on Thursday.

Watch: Police storm Massey property

"Having to use a firearm is the last thing any police officer wants to do, and in this instance our officers had no other option available," Laurenson said.

Charges had yet to be laid.

The Indepdent Police Conduct Authority had been notified.

Residents, particularly in Mānutewhau Road, could expect police in the area on Thursday, as a scene examination continued.