Police in Rhymney are appealing for information after the windows of 40 vehicles were smashed some time between late Sunday, August 15 and the early hours of Monday August 16.
The vehicles were in the New Tredegar and Rhymney areas when the windows were smashed.
Two males, aged 21 and 23 both from Pontllanfraith have been arrested on suspicion of causing criminal damage to a motor vehicle and have been released on police bail pending further enquiries.
If anyone has information they are asked to call Gwent Police on 01633 838111 or call Crimestoppers on 0800 555111.