On the morning of 22 July, surveillance officers believed that a man leaving the flats might have been Osman. In fact, the man was Jean Charles de Menezes, who had no connection to the bombers other than his home address. As the firearms team was not at the site (for unknown reasons), one of the watchers followed him onto a bus. de Menezes's innocent actions were misinterpreted as counter-surveillance measures, and a firearms team was called to intercept him. By the time they had arrived, de Menezes had entered Stockwell tube station and boarded a Tube train. Although no Kratos codeword had been given, the firearms officers believed him to be a suicide bomber. A surveillance officer seized de Menezes in a bear hug, and two plainclothes armed officers fired a total of nine shots, six of which struck his head from distances of 1 to 8 cm (½" to 3"). Menezes died at the scene.