The blast near the Red Fort that killed at least 12 people on Monday may have been caused due to panic and desperation after raids carried out by the security agencies across multiple locations in Delhi-NCR and Pulwama, J-K, to nab suspects believed to be part of a terror module, preliminary assessment by security agencies said.

The Delhi Metro Rail Corporation (DMRC) on Tuesday said that the Lal Quila Metro Station will remain closed on Wednesday as a precautionary measure, a day after a blast occurred near the Red Fort area.

Body parts lay scattered, with some fragments even reaching the nearby Jain Mandir, leaving locals terrified and sleepless through the night. The powerful explosion near Delhi's Red Fort on Monday killed 12 people and left several injured, rattling one of the city's most crowded and historic neighbourhoods.

Delhi recorded its first "severe" air quality day of the year on Tuesday, with the overall Air Quality Index (AQI) reaching 428, according to the Central Pollution Control Board (CPCB).