The body of the boy was found on September 19, a day after his murder in Hindoli area here.
The accused, identified as Zakir Mohammed, 23, a resident of Mahaveernagar Colony here, has been arrested in connection with the murder of Lokendra Singh Yadav, a resident of Ban Ka Kheda village, Superintendent of Police Bhuvan Bhushan Yadav told reporters here last evening.
Zakir has confessed to the murder act, he said.
During the interrogation, the accused told police that the Lokendra was a "homosexual" and "forcing him to engage in unnatural sexual relationship with him," police said.
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On the fateful night of September 18, Yadav and Zakir both consumed liquor at a spot along the Kota-Jaipur highway after which Lokendra started forcing him for physical relationship, and unable to bear the pressure any more, Zakir strangled him to death, he said.
Following the incident, Zakir threw the clothes, bag, ID and other belongings of Lokendra into Jait Sagar lake, he said, adding, the bag and the belongings were later recovered from the lake.
Meanwhile, Lokendra's family members have rejected the reason being given behind the motive of the murder by the police.