Cassette tapes of confidential police interviews with suspects have turned up at a car boot sale in Wisbech, report BBC Essex and BBC Cambridgeshire.
Bargain hunters Dave and Marilyn Watson bought the box of tapes at Wisbech Stadium. They found they contained intimate and private police station interviews as well as solicitors' conversations with clients.
Police have launched an investigation to find out how they ended up at the sale, but a spokesman said it believed the tapes had come from solicitors rather than police.
She explained: 'They were marked up Essex Police, Cambridgeshire Police and so we put them in to see what was on them. Of course it was immediately (obvious) straight away what it was.
'One of the ones was mainly about child abuse, giving names, addresses, etc etc'.