A police dog stabbed while chasing down a man in Rotorua has undergone surgery and is now in recovery.

With cricket on hold during the pandemic, White Ferns batter Katie Perkins is patrolling as a police officer on Auckland's Māngere streets.

"It's something our officers shouldn't have to put up with. It's truly disgusting behaviour," Police Association president Chris Cahill said.

A police officer badly injured in a fleeing driver crash has been discharged from hospital.

The Easter holiday road toll ended at zero for the first time since 2012, Police Commissioner Andrew Coster told Morning Report.

One of New Zealand's highest profile private investigators, Trevor Morley, has died at the age of 76.