Ben KendallNorfolk police are continuing their investigations into links between killer Peter Tobin and unsolved murders and disappearances in the county.Ben Kendall

Norfolk police are continuing their investigations into links between killer Peter Tobin and unsolved murders and disappearances in the county.

The force is one of eight nationwide participating in Operation Anagram, which is re-examining the movements of Tobin who has already been convicted of killing Angelika Kluk in 2006 and Vicky Hamilton and Dinah McNicol both in 1991.

It is believed that Tobin is likely to be responsible for other killings, with officers believing it is unlikely he would have killed in 1991 then waited 15 years before striking again.

One line of inquiry is Tobin's links to Norfolk, where he used to holiday. Tobin, from Johnstone in Renfrewshire, Scotland, regularly visited the Broads and also spent time in Norwich prison. However, Norfolk police say there is not yet any evidence that he was in the county at the time of the victims disappeared in any of the cold cases on the force's files.

Potential links to cases including the deaths of Susan Long, 18, from Aylsham in 1970, and Natalie Pearman, 16, from Ringland Hills in 1992, and the disappearances of Pamela Exall, 21, who was on holiday in Norfolk in 1974, and Yvette Watson, 17, from Norwich in 1979, are among those being examined as part of a long-running review.

A spokesman for Norfolk police, said: 'All of our investigations relating to unsolved murders and missing people remain live enquiries and we always welcome any new information from members of the public in relation to any of these matters.

'The potential link with Peter Tobin has been investigated and there is no evidence at this time to suggest a link between him and offences in Norfolk.'

Operation Anagram has so far generated 6,000 line of inquiry and more than 3,000 documents. The forces involved are sifting through these for clues.

Strathclyde police's Det Supt David Swindle, who is heading the operation, said: 'We set up Anagram in 2006 and the very fact that we're still here, still going, should tell you something.

'We would hope to answer a lot of questions as to what Tobin has or hasn't done within the next three months. We may come out and say that we think he has done certain things. We are also looking to be able to rule things out.'

Anyone with information about these cases should contact Norfolk police on 0845 4564567 or Crimestoppers anonymously on 0800 555111.