Two schoolchildren have been treated for minor injuries after the bus they were travelling on collided with a fallen tree outside Lisburn.
Police have said the incident happened on the Glenavy Road, which has been closed near the junction with Whinney Hill.
BBC News NI understands a number of schoolchildren were on the bus at the time.
Two were treated and discharged by ambulance crews at the scene.
Emergency services remain at the site of the crash.
