Purnima Sai, a 10th Class girl studying in Bashyam School, has been missing from the past 20 days. She left home to school and did not return. On a complaint lodged by the parents, Kukatpally police have been on the lookout for her ever since, but failed to trace her. CCTV footage showed her leaving her house and also at Nizamapet cross roads, Kukatpally DCP said. She took some Rs. 1,000 with her. They had looked for her at all possible places, but she was not found.