A case was registered by the police on Thursday in connection with the Indian Air Force (IAF) helicopter crash near here on December 8 that killed the Chief of Defence Staff, General Bipin Rawat, his wife and 11 others, and initiated a probe into the matter.

The Nilgiris district police registered the FIR under Section 174 of the Code of Criminal Procedure (CrPC) and ADSP Muthumanikam was appointed as the investigation officer, official sources said. A probe is underway.