There has been another attack on police - the fifth in the past week.

Two officers were called to a domestic dispute on Palmerston North's Heretaunga St last night.

Police spokeswoman Kim Perks says a man and a woman allegedly assaulted and threatened to kill the two officers, who were not seriously injured.

The 27-year-old man has been charged with two counts of assaulting police and two of threatening to kill. The 28-year-old woman faces a charge of assaulting police.

They will appear in Palmerston North District Court this week.