Armed police are negotiating with a suspected gunman after he was stopped by officers while walking across a park.
Police locked down an area around Leagrave Common, in Luton, Bedfordshire, after a stand-off developed shortly after 8pm on Sunday.
Dozens of officers remained in place as they attempted to resolve the incident without injury.
A Bedfordshire Police spokesman said: “Last night, at approximately 8.30pm, a man was stopped coming across the park by armed response officers as he was believed to be in possession of a firearm.
“He has been contained in the park and police are speaking with him. At this point in time there is no danger to the public although people are asked to stay away from the area while police are dealing with the situation.
“A police cordon is in place around the area. The location is a park between Sundon Park Road and Henge Way.”
The suspected gunman is understood to be standing on an area of open ground, surrounded by police officers. No-one has been hurt.