North Wales Police are appealing for information after two arson attacks on a farm on Anglesey.
The first attack was in outbuildings at the farm at Llangwllog sometime between late on 2 July and the early hours of 3 July, said Det Con Gerallt Davies.
The second attack was at the farmhouse at about midnight on 22 July.
Two men and a woman have been arrested and released on bail pending further inquiries.
Anyone with more information can call Holyhead CID on 101 or 0845 6071001 (Welsh language line), 0845 6071002 (English) or text 66767. Alternatively, contact the independent charity Crimestoppers Wales/Cymru anonymously on 0800 555111.