Armed police have surrounded a Christchurch house this afternoon.
A witness told the Herald at least 12 police cars are surrounding a property in McLeod St, Richmond, and described police armed with guns and dog units.
The source claimed police were tossing “flash grenades” into a property and yelling for someone to come out.
Members of the public have been told to stay away but a large crowd of around 100 people has gathered to watch from outside the cordons.