The RUC are treating as suspicious a fire that broke out in the mortuary of Altnaglevin Hospital in Derry early this morning.
The basement and toilet area suffered fire and smoke damage in the blaze, which was reported at about 2.30 a.m.
A forensic team is examining the scene, but a RUC spokeswoman said police believed the fire was started deliberately.
The RUC are also investigating two suspect vehicles that were left outside two GAA clubs in Co Antrim.
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One car outside the GAA club in Leyland Road, Ballycastle has been examined by the army and the suspected device has been declared a hoax.
Another suspect vehicle outside the GAA club at Glenfhesk, Armoy is being examined and a security alert is ongoing in the area.