New Delhi, June 6 -- Delhi Police has arrested a hotel cook in the Malaviya Nagar fire incident in which at least 21 people were killed, including several foreign nationals, officials said on Saturday.

The police said that the investigation has revealed that the cook's negligence led to the fire. The police have also detained several other individuals in relation to the fire.

A devastating fire at a bed-and-breakfast establishment in South Delhi's Malviya Nagar area in the early hours of Wednesday claimed at least 21 lives, including 17 foreign nationals, and left several others injured.

During the investigation, authorities allegedly discovered multiple safety violations and serious deficiencies in the building's fire safety infrastru...