Boat explosion on Hawkesbury River leaves eight people injured, two critically

Eight people have been injured, two critically, after a boat exploded on the Hawkesbury River, north of Sydney.

Emergency personnel were called to a marina near Danger Road at Brooklyn at 5:10pm on Sunday after reports a vessel was alight.

Police, ambulance and fire services attended the scene.

Eight people were treated by paramedics and have reportedly suffered varying burns.

A NSW Ambulance spokesperson said two people were critical while four were in a serious condition and two in a minor condition.

They have been taken to Royal North Shore, Westmead and Gosford hospitals.