A cannabis factory has been discovered after armed police swooped on a city home.

About 12 police cars were called to an address in Angel Road, Norwich, just before 6.50pm on Tuesday (June 28), following reports three men were seen with weapons.

Officers searched the area, but were unable to find the suspects.

However, a number of cannabis plants were discovered at the address, as well as hydroponics equipment, which is used to grow the plants.

Officers are continuing to investigate the discovery.

A police cordon remains in place on Angel Road at the junction of Patteson Road.

As of midday on Wednesday, two police vehicles remained at the scene.

Anyone with information or anyone who may have witnessed any suspicious activity around the property, is encouraged to contact Norfolk police on 101 quoting crime reference 36/48995/22.

Alternatively, people can contact Crimestoppers anonymously on 0800 555 111.