Rail disruption after attempted cable thefts in Essex
Three incidents of attempted cable theft in Essex have caused severe disruption to the rail network.
British Transport Police (BTP) said the attempted thefts had taken place in the Chelmsford area between 11 and 16 May.
In one incident about 200m (656ft) of overhead line was cut down near Chantry Lane, Boreham.
On Sunday cable cut near Generals Lane caused signalling failures and major disruptions on the lines between London and Norwich.
BTP said in total 150 trains had been affected, including 27 cancellations.
Insp Nick Brook, from BTP, said: "Stealing cable is an extremely dangerous crime which is costly to the rail industry and to the thousands of passengers who rely on the rail network.
"In these particular incidents the thieves left empty handed but caused major disruption to passengers.
"In this area, the cables do not contain copper, they are solely aluminium and have a practically worthless sell-on value."
Anyone with information is asked to contact British Transport Police.