Six men will appear at Sligo District Court this morning in connection with the discovery of cannabis plants valued at several hundred thousand euro in Leitrim on Tuesday.
The six, all Chinese nationals, are charged with drugs and immigration offences.
Another man was released without charge last evening and a female remains in custody.
The group was detained when local gardaí and members of the Garda National Drug Unit searched two houses in Drumshambo late on Tuesday night.
Between 800 and 1,000 plants in varying stages of maturity were found at the two houses. The eight people arrested were all detained when the properties were raided just after 9pm on Tuesday.
All eight were held under section 2 of the Drug Trafficking Act. The plants seized have been taken away for examination and are believed to be worth at least €200,000 and possibly considerably more.