Christchurch police are investigating a number of ram raids in the city over the weekend

Staff at Cash Convertors Papanui say two people in a silver station wagon reversed into the store's back door around 4am on Sunday.

They say phones, high end laptops and blue tooth speakers were stolen.

About an hour later, a hair salon in Lincoln Road was broken into and a small amount of cash taken.

CCTV footage shows a silver station wagon driving up to the shop.

Also on Sunday morning a car crashed into a bakery on Ferry Road.

The driver fled, leaving the car at the scene.

It's not clear whether the incidents are linked.