Stolen manuscripts belonging to the Nobel Prize-winning poet Seamus Heaney were recovered by police on Wednesday in the Magherafelt area of Co Derry.
Ten first-edition books and manuscripts relating to Mr Heaney's work - which had been stolen from a museum in Bellaghy, Co Derry, where they were on show - were recovered.
Police were alerted to the missing material when an attempt was made to sell it.
An RUC spokesman said a man was arrested and released after interview, pending the preparation of a police report.