Four men have been arrested on suspicion of possessing drugs with the intent to supply in Ripley.
The men, aged 28, 29, 35 and 50 were arrested when officer raided a house in Derby Road, Ripley, on Wednesday May 29.
They found around 40 wraps of what they believed to be heroin and crack cocaine.
The men have been questioned and released on bail pending further inquiries.
If you have information about drugs in your neighbourhood, call police on 101 or Crimestoppers on 0800 555 111.