A 29-year-old man who had returned from New York tested positive for Omicron variant on Friday, the Brihanmumbai Municipal Corporation (BMC) said in a release.
Notably, the man, who has no symptoms, had taken three doses of Pfizer's coronavirus vaccine, it added.
He tested positive for COVID-19 in a test conducted at the airport on November 9, after which his samples were sent for genome sequencing.
Two of his high-risk contacts tested negative for coronavirus, the BMC said.
"The patient has been admitted to a hospital as a precautionary measure and he has no symptoms," the civic body said in a release.
This raised the tally of Omicron patients found in the country's financial capital to 15, including five who are from outside Mumbai.
But 13 of these patients have already been discharged from hospitals.
In fact, none of the 15 Omicron patients found in the city so far has reported severe symptoms, the BMC said.
The tally of Omicron patients in Maharashtra has reached 40.
Mumbai Civic Body Announces 5-10% Water Cut Across City On October 17-18 Mumbai Civic Body Announces Diwali Bonus For Employees Hours Before Maharashtra Poll Announcement Fire Breaks Out At Mumbai Civic Body's Pumping Station, Water Supply Hit "Will Behead Their Leaders": Israel Confirms It Killed Hamas Chief In Iran Congress Leader Files Complaint Against Allu Arjun Over Scene In 'Pushpa 2' Bengaluru Techie Loses Rs 11.8 Crore After "Digital Arrest" "Some Progress": Benjamin Netanyahu On Gaza Hostage, Ceasefire Talks "Like Truman Show": Ex Mossad Agents Detail Planning Behind Pager Attacks Honda Shares Soar 16% After Buyback Announcement Track Latest News Live on NDTV.com and get news updates from India and around the world.