Mr Tigidi replaced V S B Sangma who had retired last autumn.
''Mr Tigidi was appointed as the new chairman of MPSC during the last few days on the recommendation of the Search Committee,'' Chief Secretary W M S Pariat told reporters here today.
To allay public fears on conduct of personal interviews, Mr Pariat said the government has suggested the Commission to videotape all interviews to ensure transparency.
In fact, Chief Minister Mukul Sangma recently assured in the Assembly that the MPSC would be brought under the Right to Information Act, keeping in mind the lack of transparency in the commissions functioning.