The court denied the accused bail saying the probe was at an initial stage and the allegations against them were serious in nature.
Metropolitan Magistrate Deepak Wason sent 21-year-old Sarna's friends Shivang Gambhir, Madhav, Pranil Shah, Rythm Girhotra, all in their 20s, to Tihar Jail.
Two security guards - Surender Bali (40) and Naresh Mishra (60) - who thrashed Sarna Sep 13 at the South Park Apartments in Kalkaji area in south Delhi were also sent to judicial custody after they were presented in court at the end of their 14 days judicial custody.
Investigators said the two guards were arrested for assaulting Sarna, while the NRI's four friends were taken into custody for drug abuse.
Sarna, who had completed his high school from New York, was to return to Canada for further studies but died after a drug party Sep 13 night organised at his friend's flat at South Park Apartment.
Police said the party lasted till midnight after which Sarna was thrashed by the guards for creating a ruckus in the complex. Around 2 a.m., Sarna was found bleeding in the apartment complex. He later died in hospital.
--IANS (Posted on 30-09-2013)