SOUTHOLD, N.Y. (CBSNewYork/AP) – The victims of Saturday’s deadly small plane crash on the North Fork of Long Island have been identified.

Sources tell CBS2 the pilot – 66-year-old Robert Mark, of Oakdale – and his passenger – 57-year-old Susan Quagliano, also of Oakdale – were killed when the Beechcraft A36 went down around 9:15 a.m. near Sound Avenue in Southold.

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Amazingly, a dog that was on the plane survived.

The aircraft was en route to Bedford, Mass. from MacArthur Airport.

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Southold Police Chief Martin Flatley said the plane experienced “some type of mechanical failure,” and firefighters said it was “fully engulfed and burning” when they arrived.

The National Transportation Safety Board is now investigating the crash.

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(© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)