PHILADELPHIA (CBS) — Philadelphia police are asking for the public’s help in locating a missing 12-year-old girl.

Police say, missing Juvenile Stanaya Blackwell boarded a SEPTA train at 30th Street Station heading to Warminster, PA. She then boarded a SEPTA train at 3:41 PM, heading back to Philadelphia. SEPTA is currently checking video to determine which location she exited the train in Philadelphia.

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Blackwell was last seen Saturday afternoon at the Jubilee Commandment Keepers Church along the 2400 block N. 15th Street with family members.

Police say at some point during the service, family members realized that Stanaya had wandered away from the church.

Stanaya resides on the 2200 block of N. Bouvier Street in North Philadelphia.

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Stanaya is 5’3”, 119lbs, with a medium build, brown eyes, medium complexion, and a short black afro. She was last seen wearing a black/gray dress, black lace up boots, and sunglasses.

She suffers from seizures and has short/long term memory loss issues due to recently having a brain tumor removed.

Stanaya is known to frequent public transportation and train stations. She was previously reported missing and located in Bucks County.

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Anyone with information on Stanaya’s whereabouts is asked to contact Central Detective Division at 215-686-3093/3094 or call 911.