Rosalee Hart, 17, was reported last seen on September 17, 2025, in San Marcos, California. The National Center for Missing & Exploited Children has assigned case number 2063377 and notes she may use the nickname Birdy. The San Diego County Sheriff’s Office is the primary agency handling the investigation.

Authorities have not released details about the circumstances of her disappearance, what she was last seen wearing, or her direction of travel. Anyone with information is asked to contact the San Diego County Sheriff’s Office at 531-2000 or the NCMEC 24-hour tip line at 1-800-843-5678.

If anyone knew Rosalee, saw her around San Marcos on or after September 17, 2025, or has relevant dashcam or surveillance footage, please share what you know with investigators.