The girl, a student of Class X, was found hanging from a tree on Sunday evening in a farm in Dasarlapally village in Ranga Reddy district.
According to police, the girl, a student of a school at Kandukur, came to the village on a holiday and went to the field for some work. A few hours later, her body was found hanging from a mango tree. A police officer said they found a 16-year-old youth in an unconscious state nearby.
Police arrested U Naresh, who allegedly attempted to rape the girl. When she resisted, he brutally assaulted her and hanged her from the tree.
The body was sent for an autopsy. The police said they were investigating if the girl was raped before being killed.
The latest incident came even as four incidents of rapes and attempts to rape were reported from different parts of the state in last two days.