On June 21, 1919, mob action was replaced by a legal raid on the Rand School premises, in which representatives of New York's Lusk Committee, appointed by the state legislature to investigate radicalism in the state, obtained a search warrant that was served by 10 members of the state constabulary, assisted by 55 former members of the American Protective League. A large number of books, papers, and documents were removed by the raiders — material which served to further the course of the Lusk Committee's investigation. Two days later, police officials returned and drilled open the safe belonging to the Commonwealth Center, Inc., owners of the Rand School building, and removed additional documents contained therein.