Crime 3-Year-Old Texas Girl Vanished from Playground, Police Fear She's in 'Immediate Danger' Lina Sadar Khil was last seen in San Antonio Monday afternoon By Harriet Sokmensuer Published on December 21, 2021 04:27 PM Share Tweet Pin Email Lina Sardar Khil. Photo: San Antonio Police Department Authorities in Texas are searching for a missing 3-year-old girl they believe to be in "grave, immediate danger" after she vanished from a playground. Three-year-old Lina Sadar Khil was last seen Monday between 4 and 5 p.m. in the 9400 Block of Fredericksburg Road in San Antonio, according to a police department news release. According to San Antonio Police Chief William McManus, Lina was playing on a playground at her apartment complex when her mother left the area for a short time, MySanAntonio.com reports. When she returned, she came back to find her daughter gone. Lina was not left alone, McManus said, there were other parents with their children at the playground when her mother walked away. Want to keep up with the latest crime coverage? Sign up for PEOPLE's free True Crime newsletter for breaking crime news, ongoing trial coverage and details of intriguing unsolved cases. The girl's parents are cooperating with authorities. The department is now asking the FBI for assistance in their search. "We will continue this until, hopefully, we find Lina but we are not stopping," McManus said, according to MySanAntonio.com. "This will be continuous. We've got a command line set up and we're continuing to do this for the long haul if that's necessary." An AMBER Alert has been issued due to Lina fearing to be in danger. She was last seen with her hair in a ponytail wearing a red dress, black jacket and black shoes. Anyone with information is urged to call SAPD Missing Person's Unit at 210-207-7660.