35-year old Ravi was found hanging from a ceiling fan in his room at a flat in Bengaluru under suspicious circumstances in March last year.
Bowing to public pressure, the state government had handed over the probe into the incident to CBI.
Ravi was known as an "upright" officer and his death had led to national outrage and state-wide protests.
Law and Parliamentary Affairs Minister T B Jayachandra tabling the CBI report on behalf of the Home Minister in a statement said, "CBI, after completing the investigation, had on November 24 submitted the report to Assistant Commissioner, Bengaluru South Sub-Division and Sub-Divisional Magistrate.
More From This Section
"As documented in the CBI report, the opinion expressed by medical experts, forensic science lab report and statement of evidence recorded during the investigation, was that IAS officer D K Ravi committed suicide under mental pressure," Jayachandra said.
As Jayachandra read out the Home Minister's statement, Opposition Leader Jagadish Shettar accused the government of handing over the investigation to CBI late, "after evidence was destroyed".
Opposition BJP and JDS had also launched an offensive against the Siddaramaiah government.
Initially, the Congres-led state government had said a CID inquiry would be adequate in the incident, but later yielded to calls for CBI probe.