“Efforts are on to identify and arrest the sender at the earliest,” a police spokesperson said, adding that additional security and vigilance have been implemented in the lead-up to the Republic Day celebrations.

Starting from Siddharth Vihar in Ghaziabad, this corridor will reach Noida International Airport, with a total length of 72.44 kilometers.

IMD reported moderate to dense fog at several locations in Delhi. The temperature in the city was around 7.4 degrees Celsius at 7 am, further adding to the challenging weather conditions being faced by residents.