The body of Satakshi Gupta, who was preparing for IIT-JEE examination at a coaching institute here, was found hanging from the ceiling fan of her room at her aunt's place in Jawaharnagar area, SHO Jawaharnagar Rajesh Mehathram said.
Satakshi, a resident of Ghaziabad, had been staying at her aunt's residence for last six years.
According to her relatives, Satakshi remained in her room yesterday and did not come out even at 6.30 pm which is usually when she starts from home for her coaching insitute.
When she did not respond to repeated knocks, the family members broke open the door and found the girl's body hanging from the ceiling fan, Mehathram said.
Satakshi did not leave any suicide note behind, the SHO said, adding that the relatives claimed that she had not showed any sign of depression or study pressure.
"Police is trying to find out what could be reason behind the extreme step," he added.
This is the second suicide case by a coaching institute student in Kota in last two days.
On Thursday, an 18-year-old boy preparing for competitive medical exams had allegedly committed suicide by hanging himself from a ceiling fan at his rented room in Kunadhi area.