Police stumbled upon drugs worth £35,000 when they went to a house to interview an assault suspect.
They seized 60,000 street Valium pills and 703 grams of cannabis from the property, Hamilton Sheriff Court heard this week.
Declan Duffy, 27, a prisoner, admitted being concerned in the supply of both drugs at the house in Kirkhill Road, Netherton, on January 24 this year.