The bodies of some of the nine killed in the fire at a multi-storeyed building in Kolkata's Strand Road area were so badly burnt that they could not be identified, following which doctors were mulling DNA test to ascertain their identity, officials said on Tuesday.

The toll in the fire at the New Koilaghat Building rose to nine as two more bodies were found from an elevator in the early hours, they said. Most of those killed are first responders -- four firefighters, one assistant sub-inspector posted at the Hare Street police station and an RPF personnel, officials said.