In a new twist to the mysterious death of IAS officer D K Ravi, his father-in-law today alleged that the CID probing it has deleted sensitive evidence before the case was handed over to CBI.

"The CID has deleted some of the CCTV footage in the digital video recorder installed at his residence," Hanumanthrayappa claimed.

Facing rising public anger over the death of an upright IAS officer with growing clamour for a CBI probe, Chief Minister Siddaramaiah had on Monday announced the government's decision to handover the case to the central agency, saying it had nothing to hide and was not protecting anyone.

Hanumathrayappa, a local Congress leader, said the CID had taken the CCTV footage two days after Ravi's death and returned it on March 23 and he was surprised to see some portions deleted.

"Two days after Ravi's death, the CID took away the footage and returned it on March 23. I was shocked to see the footage recorded before 10.30 am on March 16 was deleted," Hanumnthrayappa said.

On March 16, the IAS officer was found hanging from a ceiling fan at his Koramangala apartment.