The incident provoked fears about security for the upcoming Commonwealth Games in Delhi.
About three hours later a car parked approximately 150 meters from the spot caught fire, apparently due to a minor blast.
Two bike-borne gunmen opened fire at a stationary tourist bus purportedly carrying a TV crew from Taiwan at 11:24 pm, near Gate 3 of Jama Masjid.
An explosive-laden device was planted in a Maruti 800 car, parked near a transformer near the mosque.