
An ambulance on an emergency call taking a child to hospital had a window shattered by vandals in Salford.
A door window was smashed when something was thrown through it on 8 May, covering a medical technician and the child's nurse with glass.
Nobody was hurt, said North West Ambulance Service.
A spokesman said: "It is really sad that we have to once again report a mindless act of vandalism against our staff.
"What may seem like a prank can have serious implications - it can endanger our staff and patients."
He added: "Not only could it cost a huge amount of money in repair bills, it can put vital vehicles off the road meaning they are unable to be used to respond to emergencies and can even endanger our staff and patients.
"We will always work with our police colleagues to report acts of vandalism, which can result in serious punishments for offenders."