The civic body in Mumbai on Monday said 248 of the 280 samples sent for genome testing have been detected with the Omicron variant of coronavirus, an official said.

This was the eighth batch of samples, comprising 280 from civic limits and 93 from outside, that had been sent to check for the presence of Omicron, he said, adding that 21 samples had the Delta derivative and 11 samples were found with other variants of coronavirus.