According to the reports, most of the 150 people in the 65-room hotel in Delhi's Karol Bagh were sleeping at the time.
As many as 35 people have been rescued from Hotel Arpit Palace, after the fire broke out on the top two floors early Tuesday.
An investigation has been launched, with initial reports claiming it was caused by a short circuit.

Trump backs down on strikes on Iran's power network
Hong Kong police given new powers to obtain phone, computer passwords
ICE agents begin deploying at some US airports
Air Canada jet collision shuts LaGuardia; pilots killed, dozens injured
Kuwait launches probe into espionage, state security cases
Trump, Iran threaten to escalate conflict with attacks on energy and water facilities
Fuel reservoir in Russia's Primorsk port on fire after drone attack, governor says
Ambulances from Jewish community organisation torched, UK police say
