DANBURY—A 43-year-old man is facing several drug charges after a weeks-long investigation led police to search his home Thursday. Police said they began investigating Keenan Moore, of Danbury, after complaints that he had been selling drugs from his home on Ashwood Valley and other locations in town. On Thursday, officers surveying Moore said they saw him stopped on Nabby Road in the car listed on a search and seizure warrant for him and his home, police said.