DETECTIVES have been given until this afternoon to question a 27-year-old school caretaker about the sending of a series of letter bombs - including two to Abingdon and Culham in January.

Miles Cooper was arrested at his home on the outskirts of Cambridge at about 3am on Monday following a large-scale investigation.

Police said a magistrate had given officers permission on Tuesday to continue questioning Mr Cooper until 4pm yesterday.

They can now question him until 4pm today.