India recorded the first death linked to the Omicron variant of the coronavirus after the samples of a man in Rajasthan's Udaipur, who died last week, showed the presence of the variant, sources in the Union health ministry said.

The 73-year-old man, who was found infected with Omicron in genome sequencing and who had tested negative for the infection twice, died in a Udaipur hospital on December 31, they added. He died due to post-Covid pneumonia coupled with comorbidities -- diabetes mellitus, hypertension and hypothyroidism -- Udaipur Chief Medical Health Officer (CMHO) Dr Dinesh Kharadi had said.