Two cars had their rear windscreens smashed in Rathangan on Monday night last.
The incidents happened on the Main Street and in the Beechgrove area.
Gardaí are investigating if the attacks were carried out by the same culprit.
Anybody with information is asked to contact gardaí.
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.