"There will be a shortage of heroin"

Gardai say there will be a shortage of heroin on the streets of Dublin, Cork and Wexford after a major sting targeting drug dealers.

60 people have been arrested as part of the six month covert operation.

Juliette Gash reports;

Detective Chief Superintendent Michael O'Sullivan heads up the Drugs and Organised Crime Bureau - which amalgamated the Drugs and Organised Crime units;