Three people jumped off from the blazing structure even as 25 fire tenders rushed to the spot after receiving a call at 4.30 a.m.

Some 35 people were rescued from the six-storeyed Hotel Arpit Palace in Karol Bagh, Deputy Commissioner of Police Mandeep Randhawa told.

The death toll could further rise. Most victims died of suffocation, Fire Chief Officer G.C. Mishra said.

The hotel comprises a basement, a ground floor and four other floors. At least 35 rooms were booked by members of one family, who were in the city for a special function.

Fire was reported on third and fourth floor, but the blaze spiralled down as well. Only the basement and ground floors were not affected.

Most damage was reported between the second and the fourth floor. The fire has already been controlled and the cooling process is underway.

Fire fighters searched rooms and toilets to ensure that none was left trapped, Mishra said.

"When the fire tenders reached the spot, flames were leaping out of the building. Many people were still fast asleep at that time," he said.

Prima facie the blaze appears to have caused by a short circuit, the officer added.