Police investigating the disappearance of Damien Nettles on the Isle of Wight say they are beginning a new review of all information available in the case to date.
The decision comes at the end of a six month period in which a £20,000 police reward was offered.
Nettles was last seen in Cowes on November 2, 1996. He was 16 at the time.
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The UK drivers' train union ASLEF has offered to suspend next week's strike action. It comes as fresh talks to end the dispute are agreed.
Tuesday afternoon's weather for the east of the region
Tuesday afternoon's weather for the west of the region