A 25-year-old man has appeared in court accused of possessing £21,000 of drugs.
Gavin Mark Patrick Fisher, whose address was given on court papers as c/o Maghaberry, is charged with possessing cocaine and clephedrone with intent to supply.
He is further charged with simple possession of class A and class B drugs on July 1.
It is alleged a block of cocaine worth £12,000 and 435 grams of clephedrone worth £9,000 were found during a search.
An investigating PSNI officer told Derry Magistrates Court he believed he could connect Fisher to the charges.
The officer alleged there was a DNA particle on a knot of a bag linking Fisher to the class B drug.
He also alleged there is forensic evidence linking the bags containing both the class A and class B drugs, which were found in a house rented by the 25-year-old.
Defence solicitor Paddy MacDermott told the court there would be no bail application at this time.
Fisher was remanded in custody to appear in court again via videolink on December 3.