A family's public holiday has ended in tragedy after a 10-year-old boy was killed when a quad bike he was reportedly driving rolled on a private property near Nowra on Monday morning.

Paramedics were called to a private property on Devitts Road at Meroo Meadow, just after 11am on Monday, after reports of a crash.

A 10-year-old boy has been killed in a quad bike accident near Nowra. Credit:Illawarra Mercury

A 10-year-old boy had reportedly been driving an all-terrain vehicle on the property when it lost control, and flipped, police said.

The boy was trapped under the bike until witnesses were able to free him. They began emergency treatment until paramedics arrived, but he died at the scene.