A 29-year-old man has pleaded guilty to being concerned in the supply of drugs.
Christopher Gallagher, of Foyle Road, admitted nine charges of being concerned in the supply of cannabis between March and December, last year.
He pleaded guilty to a further charge of possessing the class B drug with intent to supply.
Derry Crown Court Judge Philip Babington adjourned sentencing for a probation pre-sentence report to be compiled.
Gallagher was released on continuing bail and will appear in court again on November 10.