Etizolam tablets with an estimated street value of £500,000 have been seized by police in South Lanarkshire.
Police found the drugs after searching a property in Valley Court, Hamilton, at around 11am on Tuesday morning.
Officers recovered approximately one million tablets at the address.
A 37-year-old woman has been arrested and charged in connection with the recovery and was due to appear at Hamilton Sheriff Court on Friday, April 9.
Detective Sergeant Gary Crossan, of Lanarkshire CID, said: “This was a significant recovery that has kept a large quantity off drugs of our streets.
“Police Scotland is committed to tackling the harmful supply of drugs within our communities and we will act on any information that will help trace those involved in the distribution of these illegal substances.
“I would ask if anyone has any concerns surround drugs in their area that they get in contact with police.
“Police Scotland can be contacted by calling 101 or report anonymously via Crimestoppers on 0800 555 111.”