Rao has sought "a factual report," on the entire proceedings from the time the House assembled at 11 am on February 18 and till it was adjourned sine die at 3.27 pm, sources told PTI.
The report shall be complete with all documentary and videographic evidence, it has been indicated by the Governor, they said.
Tamil Nadu Legislative Assembly Secretary A M P Jamaludeen has been asked to submit the report.
Rao will be releasing a brochure on the key events in Tamil Nadu beginning with late Jayalalithaa's hospitalisation on September 22, 2016 till he invited Palaniswami to form the government, sources said.
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They said Rao was constrained to take up the initiative in view of doubts being expressed about Jayalalithaa's passing away in some quarters and claims over alleged delay in taking steps for forming a new government after Panneerselvam had resigned on February 5.
Immediately after the eviction of DMK, Stalin had met the Governor and urged him to postpone the trust vote.