Sony has warned users of its PlayStation Network that their personal information, including credit card details, may have been stolen.

The company said that the data might have fallen into the hands of an "unauthorised person" following a hacking attack on its online service.

Access to the network was suspended last Wednesday, but Sony has only now revealed details of what happened.

Users are being warned to look out for telephone and e-mail scams.

In a statement posted on the official PlayStation blog, Nick Caplin, the company's head of communications for Europe, said: "We have discovered that between April 17 and April 19 2011, certain PlayStation Network and Qriocity service user account information was compromised in connection with an illegal and unauthorized intrusion into our network".

Full story: BBC News