The 237-page Federal Investigation Agency report quotes a former governor of the eastern Punjab province, Khalid Maqbool, and a former attorney general, Malik Muhammad Qayyum, as saying they had not been consulted by Musharraf before he declared the emergency on November 3, 2007.
Under Pakistani law, Musharraf was to have consulted then-Prime Minister Shaukat Aziz before making the declaration - something the former government officials said he hadn't done.
The report says investigators believe that's "irrefutable proof and concrete documentary evidence" that Musharraf illegally declared the state of emergency. It also accused Musharraf of taking the decision "for his ulterior motives."
The FIA report comes as Musharraf faces high treason charges over the decision, charges that carry the death penalty.
It is the first time the government has submitted the findings of its investigation to the court, which has adjourned the hearing until May 22.