Police have questioned a man in connection with the theft of rosary beads which belonged to Mary Queen of Scots.

The beads are said to have been carried by Mary, the Catholic first cousin once removed of the Protestant Queen Elizabeth I of England, when she was went to her execution at Fotheringhay Castle in 1587.

They were taken from Arundel Castle, the ancestral home of the Catholic Duke of Norfolk in south England, during a raid in May by a gang who climbed through a window and forced open a display cabinet, taking gold and silver items together valued at about £1 million.