Two-year-old girl dies in motorbike crash in far-north NSW

Crash investigators from Sydney and Tamworth are being flown to far north NSW to investigate a two-year-old being killed in a motorbike crash.

Inspector Rowan O'Brien from the local Delungra police told 9NEWS they've handed over to their state counterparts. 

"They'll put together a briefing over the next few hours."

Two ambulance crews and a helicopter arrived at Haywood Road at 9.30am this morning. 

"The girl suffered critical injuries and could not be revived," NSW Police told 9NEWS earlier.