An Amber Alert was activated this evening for a 9-year-old Bucks County girl who was kidnapped with her mother, authorities said.

The mother, Bonnie Sweeten, 38, called police from the trunk of the dark-colored 1990s Cadillac shortly before 2 p.m. to report she had been abducted along with her daughter, Julia Rakoczy, by two unknown black males, said FBI spokesman J.J. Klaver.

Sweeten told a 911 operator that her daughter was still in her family vehicle, a silver 2005 GMC Yukon Denali with Pennsylvania license GYK-8998, Klaver said.

When local police arrived at the accident scene, both vehicles were gone, Klaver said.

Philadelphia police got the 911 call, which was received through a cell phone tower at 12th and Walnut Streets in Center City, Klaver said. It was unclear if Sweeten was in or near Center City when she made the call.

The mother and daughter were taken after they were involved in a minor accident with the Cadillac along Street Road in Upper Southampton Township about a mile north of the city, Klaver said.

Rakoczy was described in the Amber Alert as 4 feet, 1 inch tall, 59 pounds, with long brown hair, blue eyes, and a dime-sized birthmark on her forehead. Her mother was described as 5'11", 130 pounds, with blonde hair and blue eyes.

Anyone with information about the kidnapping was urged to call 911.

Sweeten is married with three daughters, according to her Facebook page. She lists her activities as: "Spending time with my Family. I love to shop!" She said she loves to snowmobile in Colorado and listed herself as a 1989 graduate from Bensalem High School.

She also wrote: "I always tell Paige [her oldest daughter] and Julia "Make Good Choices" before they leave for school or go on a trip without me or a parent."

Paige Alexandra, 15, wrote on her Facebook page: "im asking everyone, to please pray for my mom and sister pray please."