https://www.vice.com/en_us/article/93ykw5/cops-raid-cannabis-farm-find-bitcoin-mine-instead

The West Midlands Police announced Thursday that it had uncovered an illegal Bitcoin mining operation in what was originally supposed to be a raid of a suspected cannabis farm. 

The raid of the industrial site originally occurred on May 18 in Sandwell, a borough near the city of Birmingham in the UK. It came during the County Lines Intensification Week, a nationwide six-day crackdown on county lines gangs—groups that traffick drugs from urban to rural areas—that led to the arrest of 1,100 people.