AGRA: The dalit teen, who was set afire by two bike-borne youths in Agra on Tuesday afternoon, succumbed on Thursday early morning in Safdarjung hospital.The 15-year-old student of class X was returning home from school on bicycle when she was waylaid by unidentified youths who were wearing helmets.The victim’s father said, "She took her last breath at around 2 am. Her throat had swollen and she had suffered over 75 per cent burn injuries. She was unable to breathe.”Speaking to TOI, senior superintendent of police, Agra, Amit Pathak said, "The girl succumbed due to infection, though her autopsy is yet to be done."After the post-mortem, the victim's body would be brought to her native village in Agra.On Tuesday, two assailants had poured an inflammable liquid on the girl and set her ablaze by a lighter. Later, the lighter was recovered by the police. The incident happened nearly 500 meters away from the victim’s on state highway (Jagner road), which connects to Rajasthan ’s Tantpur.Police have detained six suspects from Kagraul, Khaulawa, Naripura, Naumeel and two from the victim’s village (the girl's relative and neighbour) and are questioning them.On Wednesday, former BSP MP from Fatehpur Sikri - Seema Upadhay, former BSP MLA - Kalicharan Suman and members of Bhim Army visited the victim’s village and met her relatives.The Bhim Army men also went to the police station and met officers there. Speaking to TOI, Anil Kardam, Bhim Army’s Agra unit president said, "We have given ultimatum to police to arrest the accused at the earliest, or we will stage a massive protest. The girl and her family had no enmity with anyone. It looks like a conspiracy to instigate tension in the area."Meanwhile, former chief minister of UP Akhilesh Yadav tweeted, "The two incidents including an attempt to rape a girl and setting another on fire prove how much guts the miscreants have. This can happen only when anti-social elements are no more scared of the government or when they get protection from the government."