MUMBAI, May 15 (Reuters) - India's Maharashtra state charity commissioner has ordered Tata Trusts to defer its Saturday board meeting after complaints triggered an inquiry into the trusts' governance.

o Tata Trusts holds a controlling stake in the holding company of the Tata Group, Tata Sons, which faces pressure to list.

o The trusts have been told not to hold the meeting until an inspector completes a probe and submits a report.

o The order, seen by Reuters, follows complaints over trust composition. One of the complainants is Venu Srinivasan, a senior trustee at Tata Trusts, the charity commissioner's order said.

o In a late-night statement, Tata Trusts said that directions from the authorities are being examined and that it was not aware of any complaint filed by Srinivasan.

(Reporting by Jayshree P Upadhyay in Mumbai, Writing by Anna Peverieri in Barcelona; Editing by Shinjini Ganguli and Muralikumar Anantharaman)

By Jayshree P Upadhyay