Essex Police hunting an armed gunman say the force has received "many phone calls" from members of the public and officers are confident of catching the gunman.
A spokeswoman refused to comment on the identity of the victims, saying the operation was focusing on the gunman at this stage.
A major manhunt is underway this evening after a man was shot and killed in an Essex street.
Police marksmen are currently searching for the gunman in and around a quiet residential area of Clacton-on-Sea.
A second victim was also injured. A police press briefing is expected in the next hour.
Forensic experts are examining the body of a man who has been shot in Clacton. It's believed he died from a shotgun wound.
The body is lying beside a house in Fairlop Close. The East of England Ambulance service says a woman was also injured.
Police marksmen are currently searching for the gunman.
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."
As armed officers search for a gunman who has shot and killed a man in Clacton neighbours say the incident happend outside the home of police officer.
Witnesses say a body outside the house has been covered by a blanket. A woman who was also shot is said to have serious leg injuries.
People living in Clacton are being warned to stay in their homes after a man was shot and killed by a gunman.
Police marksmen are currently searching for the man. A woman has been seriously injured.