Investigating officer Sandeep Lather, who was handling the Rohtak extortion case, died by suicide on Tuesday, News18 reported.

Sandeep, posted as an assistant sub-inspector in Rohtak's cyber cell, was investigating a corruption case against Y Puran Kumar. He said in a suicide note that he is sacrificing his life for "truth".

CNN News18 accessed Lather’s suicide note and video, Lather said the ADGP’s staff officer was “absolutely corrupt". He claims the officer was deputing corrupt officials and transferring them on the basis of caste.

ASI Sandeep left behind a 3-page suicide note and a video, accusing IPS Puran Kumar of corruption and other graft charges. This comes as the Haryana police probes the suicide case of Kumar who, in his 9-page suicide note, had blamed DGP and other top officials of the state for discrimination based on caste, corruption and mental harassment.

In the final video, ASI Sandeep expressed support for former Rohtak SP Narendra Bijarnia who was shunted out after IPS Puran Kumar's sensational death, The Times of India reported. Sandeep called Bijarnia an honest officer in the video.

“This was a hardworking ASI of our Police Department, Sandeep. He was very honest and hardworking. His body has been found. A Forensic team has been called here and an investigation is being carried out...He was posted in Cyber Cell,” SP Rohtak Surendra Singh Bhoria told news agency ANI.

“Sandeep shot himself,” a senior official said. When asked about speculation over a suicide note, the official said, “We are checking. Investigations are at a preliminary stage.”

Sandeep's death was reported hours after Congress leader Rahul Gandhi met the slain IPS Puran Kumar's family.