'Eight-year-olds' throw bricks on to M3 in Surrey
Children as young as eight could be responsible for throwing bricks on to the M3 in Surrey, police say.
The incidents, near the Lightwater junction, have brought a strong warning from police to parents.
Det Con Sarah Shaw said a vehicle's tyre had burst when it had hit a brick, but there could have been substantial injuries if it had hit the windscreen.
"I would urge parents to remind their children of the dangers of throwing any kind of missile from a road bridge."
The driver reported seeing a group of youths running from an embankment towards Lightwater after he drove over the brick in the early hours on Monday.
Wearing hooded tops
It happened a few days after a similar incident, at about 15:40 GMT on 29 November, when a group of children were seen throwing objects from the bridge at the motorway's junction with the A322.
Police say the three youngsters were described as eight to nine years old, and all three were wearing hooded tops.
Det Con Shaw appealed for witnesses to either incident and for parents in the area to "take responsibility" for ensuring their children were aware of the potential consequences of their actions.
And she warned motorists in the Surrey stretch of the M3 to be extra careful and report any suspicious incidents to police.