Norwich armed police deployed around city
Armed police were sent to several locations in Norwich city centre on Friday afternoon after reports of a man acting suspiciously.
He was believed to have a weapon and was seen in the Colegate area at about 13:30 BST, police said.
Armed units and the National Police Air Service helicopter were deployed to a number of locations and to City Hall.
"A man in his 20s was located and police are satisfied no further action was required," a spokesman said.
The armed units were stood down after nearly three hours and no arrests have been made.
The spokesman added: "Public safety is paramount and throughout the incident there were no indications of a wider risk to the community."