A Detroit man was killed when he was ejected through the sunroof of his car while driving along the highway with his pants down and masturbating to porn being shown on his cellphone.

Clifford Ray Jones, 58, was killed instantly when his car rolled over in the early hours of Sunday morning.

As well as not wearing any trousers, Jones is not believed to have been wearing his seat belt which may have contributed to his partial ejection from the car.

Clifford Ray Jones had been watching pornography on his phone when he crashed in Detroit (file photograph)

Michigan State Police confirmed Jones had not been wearing any pants at the time of the accident (file photo)

The accident happened at 3.30am on Sunday while Jones was travelling south on the Lodge ramp to Interstate 75.

It is believed that Jones lost control of the car because he was distracted and was unable to prevent the 1996 Toyota from spinning because he did not have both hands firmly on the steering wheel.

According to the Detroit News, Jones died at the scene of the accident.

Lieutenant Mike Shaw of Michigan State Police said the incident was among the strangest he has dealt with during his professional career.

He said: ' We see people putting on makeup, we see people doing different things as far as hygiene, as far as reading books, it’s almost to the fact there’s so much technology out there a lot of people are more paying attention to what they’re doing other than driving their cars.'