; (ii) that retention of documents and evidence is crucial, and any unauthorized destruction of documents and evidence may result in additional investigations and potential punishment; and (iii) that there is a prohibition on retaliation against the covered employee who filed the complaint and may be investigation and discipline for retaliation. (2) Investigation of complaints (A) Investigation The Office of Civil Rights shall investigate all complaints in a prompt, thorough, and impartial manner. The Department shall update the Foreign Affairs Manual to enable Office of Civil Rights investigators to travel to the foreign and domestic sites of received complaints in which widespread or pervasive sexual harassment is reported. The Under Secretary for Management shall authorize sufficient funding for Office of Civil Rights attorney advisors to conduct this travel as necessary. (B) Investigation of Chief of Mission If the Chief of Mission at an overseas post is named as the alleged perpetrator in a complaint, the Office of Civil Rights must notify the Secretary of State. The Office of Civil Rights must prioritize the investigation of such cases. (C) Report Not later than 120 days after a complaint is filed under this section and transmitted to the Office of Civil Rights, the Office of Civil Rights shall conclude the investigation regarding that complaint. On the date the investigation is so concluded, the Office of Civil Rights shall transmit a written report on the results of the investigation to— (i) the covered employee who filed the complaint; (ii) the accused employee and his or her employing office