Armed police have arrived at the scene of an ongoing police incident in Hampden Park this afternoon (June 30).
Officers were first called to a property in Argyll Court, off Faygate Road, just before 11pm on Saturday night (June 29).
Sussex Police said this was following concerns for a male inside the property.
Ambulances and a fire engine were also sent to the incident earlier this morning, and police in riot gear were seen entering a flat.
Officers and negotiators remain at the property, said police.
No further information has been released at this stage.
See our initial story here: Police incident in Hampden Park