Photo: File
A police spokeswoman said they received a report of someone acting suspiciously near a property at the corner of Pine Ave and Caspian St in New Brighton about 6.30pm.
A number of police units were called to the scene, including an armed response team and the Eagle helicopter.
Three people were arrested at the scene - one suspect was found inside the property, one was on the roof and another was in a nearby car.
A man was also assaulted during the incident, the spokeswoman said.
A 29-year-old, a 33-year-old and a 19-year-old are due to appear in the Christchurch District Court on Wednesday on aggravated robbery charges.
