Gardaí are appealing for anyone with information to come forward
If you have any information on either incident you're asked to get in touch with Carlow Garda station 059 9136620.
A premises in the town was searched yesterday.
It happened at Rathornan near the Arboretum, outside Leighlinbridge.
Dean Roche's mother Geraldine has made a number of emotional appeals for help in finding her missing son.
Gardaí are looking to hear from anyone who may have witnessed it
Gardaí say significant damage was done to the vehicles
It happened in the early hours of Sunday morning.
The CAS bridge, which is yet to be named, was decorated in yellow spray paint in recent days
It was taken from a house on Sycamore Road in Carlow Town