Hyderabad, Aug. 13 -- A 48-year-old school principal was stabbed to death by unidentified people at her residence in Telangana's Nalgonda district on Wednesday, police said, suspecting that people known to the victim could be behind the murder.

Kallu Roopa Reddy, principal and director of Nagarjuna Grammar English Medium School in Kondamallepally, suffered around 27 stab wounds in the attack. Police said no cash or valuables were missing from the house, ruling out theft as an apparent motive at this stage.

"She lived with her husband, Kallu Rajender Reddy, at their own house in the Colony. The couple also owned a house in Hyderabad, where their son Abhinav Reddy was pursuing engineering, and they frequently travelled between the two pla...