A teenager was killed for his testicles by a gang who saw a social media video claiming they were worth £100,000, police said.
Rehan was just 17 when the gang allegedly murdered him and cut off his testicles, believing they could be sold for a huge sum on the black market.
Police said the group had been inspired by a social media video falsely claiming human testicles were extremely valuable.
Officers arrested the prime suspect, Zoheb Khan, a 20-year-old business student, and Aamir Qureshi, 18, and detained three minors.
Investigators alleged that Khan recruited the group and convinced them that testicles could fetch about 12 million Indian rupees (£92,465) on the black market in the Gulf.
Khan allegedly posed as a doctor to convince his associates that he knew how to remove the organs.
Police said he bought a white apron, stethoscope and thermometer online and used them while training the group.
Rehan was a street vendor who sold pens and key chains at a market near Iqbal Maidan in Bhopal, central India.
Two minors approached him at his stall on August 6 and offered him Rs 100 (£0.77) to help with an alleged fight near Khatlapura on Lower Lake.
Officers arrested the prime suspect, Zoheb Khan (pictured), a 20-year-old business student
Aamir Qureshi (pictured), 18, has also been arrested
They then allegedly lured him to a secluded area and stabbed him repeatedly with a blade.
According to Ayush Gupta, the deputy commissioner of police in Bhopal, four of the accused participated in the murder while Khan guided them on a video call.
They kept Rehan's testicles packed in ice for two days while trying to find a buyer, police said.
When the effort failed, Khan allegedly ordered the group to dispose of the organs in separate lakes.
Police recovered Rehan's body from Lower Lake near Dhobi Ghat on August 10. They identified him from a tattoo, five days after his mother had reported him missing.
A post-mortem examination found fatal injuries and confirmed that his testicles had been removed.
Police have since recovered the blade they believe was used to kill Rehan and deployed divers to search the waters for his testicles.
Santosh Patel, Bhopal's assistant commissioner of police, said the search would prove difficult and officers were relying on the suspects tell officers where they had disposed of them.
Investigators have also identified people whom the gang allegedly approached as potential buyers and are questioning them about whether any sale was planned.