Police on Saturday released the four people arrested over the sudden death of a young man and woman in the reclaimed suburb Hulhumale late last month.
Ahmed Haameen, 21 and Fathimath Sama, 18 were rushed to hospital during a birthday celebration where they were pronounced dead shortly after.
Police arrested the four who were reportedly with the victims during the celebrations. Police said the four were released late Saturday as "they were no longer needed" for the investigation. Police however, refused to comment on the investigation.
Police had confirmed that party drugs were found near the beach where the victims along with friends were celebrating a birthday. Initial reports indicated that Haameen had collapsed while playing football at the beach while Sama who was found floating near the swimming track had drowned.
However, police later refuted the initial reports, hinting that the party drugs could have been the cause.