Colorado's top federal prosecutor ordered 25 medical marijuana dispensaries located near schools to close in a new series of letters issued March 23. US Attorney John Walsh warned owners of the establishments that they have 45 days to shut down or "action will be taken to seize and forfeit their property," his office said in a press statement. Walsh's office said the letters were sent to dispensaries that violate a state law requiring cannabis dispensaries be at least 1,000 feet from a school. He sent a similar ultimatum to 23 cannabis dispensaries that violated the buffer law in January. He said no enforcement measure was taken because those locations all ceased cannabis sales.