A large emergency services presence was active in a city road for five hours today.
Eyewitnesses report seeing eight police cars, a riot van and two ambulances.
Police were called out to an incident at a property in Lilian Close in Hellesdon, near the Boundary junction, at 9.26am.
A spokesman said a police negotiator was also at the incident of the "concern for safety".
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The road was kept open and with no cordon in place at the house that police and ambulance staff were focused on.
Officers remained at the incident until 2.30pm when a man in his 50s was arrested for breach of the peace.
He was then taken to Aylsham Police station for further questioning, where he remains.
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