Armed police, a helicopter and dog units descended on to a residential street.

Police were seen in Hellingly, near Hailsham, this morning at around 10.30am.

The Argus understands that a person was held and police searched a house in the area.

The Argus: Police helicopter above Hellingly this morningPolice helicopter above Hellingly this morning (Image: Sussex News and Pictures)

Armed police were in Houghton Way just after 11am.

A 16-year-old boy has been arrested on suspicion of carrying a knife.