Unidentified men have set the minor on fire after raping her in Ward 17 of Mohammadabad area of Chichawatni.
The girl had left her house to buy sweets from a nearby shop.
After she failed to return home, her parents and neighbors started looking for her. After three hours, the girl was found to be burnt alive and immediately shifted to Tehsil Headquarters Hospital. The doctors said that the girl had suffered 80 to 90 percent burn wounds.
The minor was later shifted to Jinnah Hospital Lahore in a critical condition where she succumbed to her wounds Tuesday morning.
A murder case has been registered against the suspects, the police said. However, the FIR does not include rape charges.