Cedar Hill (CBS.DFW.COM) - Two people are dead after an overnight motorcycle accident on Highway 67.

Corky Brown from the City of Cedar Hill says the accident happened around 1 a.m. when 54-year-old Robert Flory was driving a Harley Davidson on the northbound lanes of Highway 67. Police believe he was speeding and lost control of the bike.

The bike then slammed into a concrete barrier and flipped over and landed into southbound traffic.

Both Flory and an unidentified female passenger were thrown off the bike. Both died at the scene.

Police are investigating if alcohol was a factor in the accident.