Chairperson Shaista Shameem told the Fiji Village website, the civil case filed by ousted Prime Minister Laisenia Qarase against Commodore Frank Bainimarama should not stop investigations into allegations of treason.
Dr Shameem stressed that the right of the complainant is protected under the constitution.
She says it's not necessary for the police commissioner, Commodore Esala Teleni, to step aside for investigations to proceed.
Public Integrity campaigner Peter Waqavonovono earlier called for the police chief to step aside in the interest of fairness, and to maintain the integrity of the investigation.
Earlier today, police obtained more statements from several members of the ousted government of Mr Qarase's SDL party.
Two days after lodging a complaint of treason against Commodore Bainimarama and members of his cabinet and key supporters, detectives from the Fiji Police visited the headquarters of the SDL party.
Detectives wanted another statement from one of Mr Qarase's ousted cabinet ministers, Ted Young, about events leading to his removal from office during the coup of 5 December, 2006.
Mr Young was accompanied to the Raiwaqa Police Station by party lawyer Niko Nawaikula, SDL party director Peceli Kinivuwai and several other party members.
Fiji police say they will not be investigating the treason complaint lodged by SDL party members.