According to "Historia de Iapan" by Luis Frois whose church was only 200 meter away from the Honno-ji Temple, '(Around three o'clock in the morning), (a small number of) warriors of the Akechi clan invaded the temple without being suspected (It seems that Oda's gatekeepers lost their sharpness because they knew that umazoroe (a troop review) in front of the Imperial Palace was planned for the next day.), and shot Nobunaga, who came out from the toilet and was washing his hands and face, in the back using bows and arrows.
一方、本能寺から200mの近辺に教会のあったルイス・フロイスの『日本史』（HistoriadeIapan）では、「（午前3時頃と言われる）明智の（少数の）兵たちは怪しまれること無く難なく寺に侵入して（6月2日に御所前で馬揃えをする予定であったのを織田の門番たちは知っていたので油断したと思われる）、信長が便所から出て手と顔を清めていたところを背後から弓矢を放って背中に命中させた。