The My Lai massacre was followed shortly thereafter by a series of hearings on war crimes in Vietnam, which began April 25, 1971. Dellums had called for formal investigations into the allegations, but Congress chose not to endorse the proceedings. As such, the hearings were "ad hoc" and only informational in nature. As a condition of room use, press and camera presence were not permitted; however, the proceedings were transcribed. A small number of other anti-Vietnam War congressional representatives also took part in the hearings.