This week, police confiscated 1,746 bitcoin mining machines in raids on 21 premises. Seven men were arrested by authorities in Johor State, Malaysia, for stealing millions of dollars worth of electricity to mine Bitcoin. Police are currently investigating the operation and attempting to track down the group's mastermind and other still-at-large participants. Malay Mail confirmed that the operation involved the local electricity company Tenaga Nasional Berhad (TNB) and Johor police.