Police armed response teams are continuing to hunt for a gunman who has left one man dead and a woman injured in a shooting in Clacton.
A spokesman for Essex Police said: "Residents are being urged to remain indoors while armed officers locate the gunman.
"Neighbourhood policing officers are maintaining a high-profile and visible presence in the community, supporting victims and witnesses.
"Members of the public are urged to contact police on 999 if they see the gunman who should not be approached."
Detectives trying to reconstruct the last moments of a gunman who killed an Essex police officer have issued an appeal for information.
A special church service has been held in Clacton today- to help people in the community affected by the murder of PC Ian Dibell.
People living in Clacton-on-Sea have been paying tribute to PC Ian Dibell