Enquiries continue into source
Police say a 'fairly large' amount of heroin has been seized around the capital.
A quantity of the Class A drug was found by staff from the Central Neighbourhood Policing Team last week.
Enquiries have been continuing as to where it came from.
Chief Constable Gary Roberts has thanked the officers involved for their 'excellent' work.
Peel Commissioner at centre of row would 'welcome' external investigation
"It had to be big": Family to run five ultra marathons in cousin's memory
Two sailings cancelled, more in doubt
Future of Hospice shops secure, says charity boss
Isle Listen's 'Castle to Castle' challenge postponed