A senior Calgary firefighter has been arrested and charged in connection with a 400-plant marijuana grow-op in the southwest Calgary neighbourhood of Millrise.

The grow-op was found in a house in the southwest district of Millrise. (CBC)

District Fire Chief Dwayne Price is jointly charged with a 52-year-old woman with production of a controlled substance and possession for the purpose of trafficking.

The Alberta Law Enforcement Response Green Team estimates the grow-op was capable of producing half a million dollars worth of marijuana.

The grow-op was discovered on Jan. 29, but no arrests were made at the time. The investigation continued and the two suspects were identified and arrested on Wednesday.

Price has been suspended from the fire department.