A memorial stone to commemorate a murdered Essex police officer has been unveiled by Prime Minister David Cameron.

The ceremony was held in the Sensory Gardens in Clacton-on-Sea today for Police Constable Ian Dibell who was killed while off duty.

Mr Cameron said: “We are here today to remember the extraordinary courage of one of country’s finest policemen, a man who made the ultimate sacrifice to save the lives of others.”

Pc Dibell was shot while trying to intervene in a dispute near his home on July 9, 2012.

The father-of-two was posthumously awarded the George Medal for gallantry by the Queen.

The service was attend by Pc Dibell’s family, friends and police colleagues.

Chief Constable of Essex Police, Stephen Kavanagh said: “There are no words to adequately sum up the enormity of Ian’s sacrifice, nor that of any officer who dies in the service of his community.”