Police said the children, aged eight, seven, four and three, were taken by a man from a property at The Leap, north of Mackay, in Central Queensland.
Police believe the children were taken around 11.30am this morning and are believed to be at “significant risk”.
“All of the children are described as being Caucasian in appearance with a slim build and brown hair,” police said in a statement.
“A man was seen taking the children away from a Maraju Yakapari Road address in a white 2005 Nissan Patrol 4WD bearing Queensland Registration 063BC9.”
The vehicle was last seen heading towards the Bruce Highway.
The man is described as white with a solid build and 175 cm tall.
He has a shaved head, a full bushy beard, and multiple face and body tattoos including ‘Joker’ themed facial tattoos.
Anyone with information has been urged to contact police at the following numbers:
Call 131 564 to provide information about this abduction.
Call 000 for life-threatening information about this abduction.