Thirty suspected cannabis plants have been found in Chesterfield.
Police made the discovery when they raided a property at Stone Lane, New Whittington, in the early hours of Tuesday.
An eyewitness said the raid was 'very dramatic'.
Officers also arrested a man at Babbacombe Court on Devonshire Close, Old Whittington.
The 44-year-old was held on on suspicion of possession of a controlled drug and released on bail.
Anyone with information about drug-related activity in Derbyshire should call police on 101 or Crimestoppers on 0800 555 111.