Whanganui police are searching for a person in the Castlecliff area after a car chase through the city.
A police spokesman said a fleeing stolen vehicle collided with a police car and was subsequently spiked around 2.50pm on Cornfoot Street, Castlecliff.
"The person of interest fled the scene and is still outstanding," he said.
Cornfoot St was closed for a time between Kamahi and Taupata streets but has now reopened.
A car hit a power pole head-on with another vehicle coming to a stop next to it. The car which hit the power pole had been spiked. Firefighters were attempting to prise the vehicle off the power pole, with a tow truck on site.