According to police, while two students hailed from Bihar, the third was from Madhya Pradesh.While Anand was preparing for his pre-medical examination, Ankush was preparing for JEE.One of them was found hanging in his room today around 11:30 am while the other was found in his room in the afternoon, which was locked from inside,” said Vasudev Singh, SHO, Jawahar Nagar police station.Police said investigation is underway to find out whether the two boys knew each other or if they were friends.According to a factual report prepared by the Kota police, empty packets of zinc phosphide were recovered from Pranav’s hostel room and traces of the substance was also found in his food."