Police are still looking for the driver who hit and killed a woman in Madison late Tuesday night.

According to the Metro Nashville Police Department, 36-year-old Christina Valentino was hit by a passing car after being thrown off a Harley Davidson motorcycle on Gallatin Pike around 11 p.m.

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Police said Valentino was riding with 43-year-old Carl Hopper. They were heading north on Gallatin Pike when police say 50-year-old Samir Guirguis turned left onto Maple Lane into the path of the motorcycle. Hopper and Valentino were both thrown from the motorcycle.

Valentino was then struck by a white sedan traveling south on Gallatin Pike. Police said the driver of the white sedan fled the scene. Investigators are still working to identify the driver.

Valentino and Hopper were taken to TriStar Skyline Medical Center. Valentino died from her injuries. Hopper is being treated for serious injuries, according to police.

The investigation determined that Guirguis failed to yield to the motorcycle. Guirguis told police he did not see the motorcycle before the collision. Police said there was also evidence that Hopper had been drinking alcohol.

Investigators will send the case to the district attorney's office to determine if charges will be filed.

Anyone with information about the hit-and-run vehicle or driver is asked to call Crime Stoppers at 615-742-7463.

Valentino was scheduled to sing at a songwriter event this Sunday. The organizer has turned the event into a benefit to raise money for her family's expenses. Gina Jones is hosting the event, which starts at 6 p.m. Sunday at the Hayes Street Hotel.

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