The family and friends of a southern California woman are desperately searching for the young mother after she vanished under mysterious circumstances.

According to CBS Los Angeles, Heidi Planck of Downey was last seen on October 17, the day her 10-year-old son had a football game. Her ex-husband Jim Wayne reportedly said Planck left the game at halftime, and said she seemed distracted. Planck, 39, was also seen on surveillance footage that day leaving a residence presumed to be her own home. The report indicates that sighting was after Planck left the football game, but the precise timeline remains unclear.

“She’s leaving the house. She’s got the dog following behind her. She’s got a tiny purse under her arm and she jumps into her Range Rover and drives away,” Wayne told the news station.

Three hours after Planck was last seen, her dog was found on the 28th floor of a a high-rise building in downtown Los Angeles, about 30 miles from Downey. Planck’s vehicle, purse, computer and cell phone have not yet been found, and it is not known why Planck was at the apartment building.

It is unclear how Planck’s dog was discovered at the building so soon after she was last seen, as her friends reportedly said they first became worried when she didn’t pick her son up from school three days later. Her friends now say the building management at the high-rise has refused to allow them into the parking garage to search for Planck’s SUV. They also claimed the management refused to share surveillance footage without a police warrant, according to the report.

It is unclear when Planck was reported missing and if the Los Angeles Police Department is searching the high-rise building for clues.

“I think something has to have happened to her to keep her away from her son,” a friend told the news station.

Planck is described as a white female, 39, with blond hair and blue eyes. She is  5 feet, 3 inches tall and weighs about 120 pounds. When last seen, she was wearing jeans and a gray sweater driving a 2017 gray Range Rover with California tags U840X0.

Anyone with information on Planck’s whereabouts was asked to contact the LAPD Missing Persons Unit at 213-996-1800. During non-business hours and weekends, call 877-527-3247.

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