A woman aged in her 20s, arrested in connection with a drugs seizure in Thurles, was released without charge last night.
A file will now be prepared for the Director of Public Prosecutions.
A male in his 30s remains in custody.
Heroine, amphetamine and cannabis with a combined estimated street value of €40,000 (pending analysis) was seized when uniformed gardaí and members of the Divisional Drugs Unit searched a house.