Suffolk Police have closed a road in west Ipswich due to a potential firearms incident.
Officers received a call just after 4.45pm by an individual reporting that they believed a person was in possession of a firearm at an address in Allenby Road.
Armed officers have been sent to the scene. Occupants of two properties in the road have been asked to leave their homes.
Both properties are now being searched, but at this stage no weapons have been seen by police.
A 32-year-old man was arrested in connection with this incident nearby in Hadleigh Road at around 5.30pm. He has been taken to Martlesham Police Investigation Centre for questioning.