New Delhi, July 11 -- A high security alert was briefly triggered in the national capital after a threat call was received claiming that the historic Red Fort would be blown up, which was later discovered to be a hoax, officials said on Saturday.

The threat call was initially received at the Mumbai Police control room. Recognising the gravity of the threat to the iconic monument, the Mumbai Police immediately passed on the intelligence to the Delhi Police control room.

Upon receiving the alert, the North District Police in Delhi swung into action and launched a comprehensive security sweep and verification process.

"A call was received at the Mumbai Police control room threatening to blow up the Red Fort in Delhi. The information was s...