Two Latvian men have been arrested under the National Security Act after a fence was breached at an RAF base in Cambridgeshire.
The alert was raised when a Ministry of Defence Police (MDP) security patrol at RAF Molesworth identified an abandoned vehicle at about 22:00 BST on Wednesday.
After searches by the MDP and Cambridgeshire Constabulary, a small breach of a perimeter fence was identified a few hours later.
The two men, aged 36 and 32, were arrested inside the base perimeter, a spokesperson said.
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