 When he received Dyer's initial report, O'Dwyer gave permission to General Beynon to send a telegram to Dyer which stated "your action correct and the lieutenant-governor approves".O'Dwyer and several other senior officials and military officers supported Dyer's actions both initially when only limited information was received and later when more detailed information of the scale of the killings became available.Subsequently, martial law was imposed on 15 April and was back dated to 30 March.