Plane crashes near Kelowna, B.C., leaving 4 dead

• Read more:Former Alberta premier Jim Prentice among 4 killed in B.C. plane crash

Former Alberta premier Jim Prentice is amongfour people killed in a plane crash Thursday nighteast ofKelowna, B.C.

The Transportation Safety Board says a twin-engine CessnaCitation disappearedfrom radar soon after taking off from Kelowna,headedto the SpringbankAirport near Calgary.

The TSB confirmedwreckage has been found near Winfield, B.C.

The TSB's Bill Yearwood called the accident "unsurvivable."

"The aircraft is destroyed;all persons on board lost their lives," said Yearwood.

The Joint Rescue Co-ordination Centre (JRCC)in Victoria said it received a call Thursdayaround 9:40 p.m. PT that a small plane had gone down.

Capt.Zlato Neral ofthe JRCC told CBC News that the plane disappeared from radar at an altitude of about 8,000 feet.

The aircraft was registered in Alberta andbased out of Springbank.

Yearwood saidthe coroner will have control of the crash site.

The TSB will also be at thesite to examine the wreckage andcollectany cockpit orflight recording devices.

Yearwood saidradar data and background information on the aircraft will also be collected in theeffortto determine the cause of the accident.