Supermarket giant Tesco has had to call in police after discovering that hundrends of pounds-worth of vouchers have gone missing from its online Clubcard accounts.

The company believes that dozens of Clubcard accounts may have been targeted by online fraudsters after a number of customers complained that they have lost accumulated vouchers or had been unable to log in.

A spokeswoman for Tesco said: "We have launched a thorough investigation into a small number of incidents and referred the matter to the police.

"In the meantime, we'd like to ask any customers who believe they're affected to contact us directly so that we can make sure their accounts are up to date."

It certainly wasn't all bad news for Tesco though, as JP Morgan initiated its coverage of the stock with a target price of 425p and an overweight rating.

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