NEW DELHI -- The death toll in Delhi's blast on Monday evening rose to eight, and some others were seriously injured and admitted to a local hospital, the "Aaj Tak" TV channel reported.

Yet, there was no official confirmation. The cause of the blast could not be known.

The blast occurred inside a car parked near the historic monument Red Fort in the Indian capital.

According to the TV report, at least a dozen people were seriously injured in the blast.

The spot where the blast occurred was normally a busy market area. Delhi Metro Rail Corporation's station was also located very near the blast spot.

A red alert sounded across the Indian capital city following the blast. Efforts were underway to ascertain the cause of the blast.