Men hunted after Falmouth bus handbrake released
16 August 2012 Last updated at 12:37 BST
CCTV has been released of an empty bus rolling down a road in Cornwall and crashing into boats and a car after its handbrake was deliberately let off.
Police said the incident, in Falmouth, "had potential to cause serious injury".
Video has also been released of three men officers wish to talk to in connection with the incident.