Gardaí are appealing for information in relation to an incident on Saturday morning.
A business owner arrived at his premises to find that a sign, outside his premises had been set on fire.
The sign was smouldering when the owner arrived at 6.30am.
The premises is on Borris Road, Graignamanagh.
Anyone with information is asked to contact gardaí in Graignamanagh.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.