Police are investigating after a vehicle hit a power pole in Umina.
Shortly before 9.30pm today emergency services were called to Ryans Road, Umina Beach, near the intersection of Karloo Road, after reports of a crash, NSW Police say.
Officers from Brisbane Water Local Area Command arrived to find a Ford Falcon sedan had hit a power pole.
As a result, the vehicle caught alight and several power lines came down, leaving residential blocks in Umina without power.
Three male occupants, aged 17, 21 and 29 were treated at the scene by NSW Ambulance Paramedics.
The 21-year-old and 29-year-old were conveyed by NSW Ambulance Paramedics to Gosford Hospital suffering various injuries.
The 17-year-old was airlifted to John Hunter Hospital in a serious condition.
Ryan Road between Carpenter & Karloo Roads remains closed.
NSW Police and Ausgrid remain on scene.
Crash Investigation Unit attended and inquiries into the crash are continuing.
Police are urging anyone with information in relation to this incident to call Crime Stoppers.