At least 10 major hotels in the Uttar Pradesh capital received bomb threats via email on Sunday.
The email threatened that explosions would take place if a ransom demand of $55,000 (Rs 4,624,288) is not met.
"Bombs are hidden in black bags on the grounds of your hotel. I want USD 55,000, or I will detonate the explosives and blood will spill everywhere. Any attempt at defusing the bombs will detonate them," read the threat email, a copy of which is with PTI.
Brajesh Kumar, a manager of one of the hotels, told PTI Videos, "We received the threat mail in the morning. As a precaution we reported the matter to the local police station and a team has come to look into the matter."
"We already have systems to scan all the guests and their luggage. Even then, as a precaution we are helping the police to scan the hotel," he added.
Senior police officials could not be reached for a comment despite several attempts.
Authorities have been grappling with a number of hoax bomb threats targeting Indian airlines during the last fortnight. -- PTI