Update: Police said shortly before 6pm that the road closures have ended. A suspected firearm has been recovered and a 39-year-old man was arrested on suspicion of theft.
A number of roads in the city centre have been closed after armed police rushed to the Monks Road area.
Police said the incident is part of county lines operations – crimes relating to drugs and child exploitation.
St Rumbold’s Street at the junction of Friars Lane and Montague Street, as well as Rosemary Lane will be closed while the operation takes place.
Police said the operation will cause some disruption during rush hour on Wednesday, October 17.