A Danbury woman has been arrested on drug related charges after neighbor complaints about illegal drug sales in the City.  Police conducted a several month long investigation into 42-year old Claudette Prior and her Dean Street apartment.  Search warrants were carried out yesterday afternoon when investigators followed Prior from her home to a nearby gas station.  Police say she had cocaine in her possession.  A search of her car and residence revealed no further evidence.  Prior was charged with possession of a controlled substance, possession with intent to sell, and two counts for possession and intent to sell within 1500 feet of a school.