 On July 14, the Irgun bombed the Land Registry Office in Jerusalem, killing two Arab constables, and the following day an explosives truck was seized and a British constable killed in another Irgun attack.On August 8, 1944, Lehi ambushed the car of British High Commissioner Harold MacMichael in an attempt to assassinate him.Although two others in the car were wounded, MacMichael escaped serious injury.