A post-mortem examination carried out on a Television US reporter Tallmadge D’Elia shows that, the US man died when a vape pen blew up and projected fragments into his skull.

Tallmadge D'Elia also suffered burns over 80% of his body in a fire on 5 May caused by the exploding e-cigarette, according to forensic officials.

The 38-year-old's body was discovered by firefighters in the burning bedroom of his family home in the beach resort of St Petersburg, Florida.

It is believed to be the first US death from a vape pen explosion.

The television producer's death has been ruled an accident.

The report said emergency crews encountered "extensive" fire damage to the bedroom where the body was found, but minimal smoke.

The electronic cigarette was manufactured by Smok-E Mountain, said the medical examiner.