A 22-year-old Bethesda man has been charged with conspiracy to supply Class A and Class C controlled drugs.
He was arrested after police discovered one kilo of heroin, with an estimated street value of £100,000, at a property in the Bethesda area on Wednesday night (March 30th).
The man has been remanded in custody after appearing in court this morning.
A 25-year-old from the Bangor area who was also arrested at the time has been released on police bail pending further enquiries.
Two further arrests were made in connection with the same incident and two men, aged 34 and 40-years-old and from the Liverpool area, were charged with conspiracy to supply Class A controlled drugs.
They were also remanded in custody at Caernarfon Magistrates court.
All three have been further remanded to appear before Caernarfon Court on Friday 8th April.