Those detained will be brought back to Mumbai on Sunday, NCB sources said.
Eight people, including two women, have been detained following a raid on a party on a cruise ship off the coast of Mumbai on Saturday, the Narcotics Control Bureau said in a statement.
The NCB team boarded ship disguised as passengers based on a tip, sources said.
Drugs like ecstasy, cocaine, MD (Mephedrone) and charas were recovered from the party on board the ship, the anti-drugs agency said.
"During the operation, all suspects as per the information were searched various drugs like MDMA/ Ecstasy, Cocaine, MD (Mephedrone) and charas has been recovered. A total of 8 persons, including 2 females have been apprehended and their role being investigated in relation to the said recovery," said the agency.
Those detained will be brought back to Mumbai on Sunday, they said. According to them, the party began after the ship left Mumbai and was at sea.
"Their statements are being recorded. Based on the facts, arrests will be made and the accused will be produced in the NDPS court", a senior NCB officer told NDTV.
On being asked if any celebrity was present at the party, Sameer Wankhede, NCB Zonal Director said,"I can't comment on it."
The NCB has been actively working on anti-drugs cases since last year. A big case it has been handling includes a chargesheet over an alleged "drugs syndicate" that named 33 people, including actor Rhea Chakraborty, related to the death of Bollywood actor Sushant Singh Rajput.
The Directorate of Revenue Intelligence had also seized close to 3,000 kg of heroin at Gujarat's Mundra port early last month, and recovered around 37 kg of the narcotic drug, along with cocaine -- or substance suspected to be the contraband items -- from Delhi and Noida in Uttar Pradesh.