SP Dr Janaki Sharmila said the three minor boys aged between 15 and 17, working in different fast-food centres and belonging to different parts of Basar, were apprehended while moving suspiciously at a railway station in the town.
The victim, Mohd Yahiya Danish (17), a resident of Safardarnagar, Borabanda, was pursuing intermediate from a private college at Yousufguda in which the juvenile also studied.
Aleem, against whom a history sheet is maintained at Habeebnagar police station, was sitting and consuming alcohol near a liquor shop at Mallepally when unidentified persons stabbed him.
Lakshman was married to the victim Roja and the couple have three children. Roja worked at an apparel store while Lakshman does not do any work and would idle around.
In Siddipet, unidentified miscreants killed a 55-year-old man when he was in deep sleep at Kuchanpally in Husnabad mandal in the early hours of Tuesday.