The Armed Offenders Squad is responding to reports of a gunman in Hanmer in Canterbury tonight.
Police were called around 9.30pm to the incident. A local told Newstalk ZB they counted 13 police cars heading north on the motorway out of Christchurch.
A police spokesman confirmed the AOS was responding to a firearms incident in Hanmer.
The incident is understood to have unfolded on Hanmer Springs Rd, between Lewis Pass Rd and Medway Rd.