During WGC 2010 in Szeged, Hungary, an australian pilot came in too low and the left wing clipped the front of a truck. The glider crashed, pilot luckily escaped unharmed. However, the truck driver received very serious head injuries and lost one of his eye.
The pilot immediately left the country, before the police could have detained him.
THe police did not issue an international warrant on purpose, they considered this unnecessary for the duration of the investigation.
Three years later, in 2013, the pilot was sentenced to 8 months in "light" prison, suspended for a probation of 1 year.
I am not sure where the case is now, but this is a link that you might try to translate with Google....
IHO - Biztos út - Vitorlázógép ütközött kamionnal, ítélet