At least 10 persons were killed as a cracker factory catches fire Saturday in Ujjain of central Indian state of Madhya Pradesh, local news channel CNN-IBN reported. The fire broke out at badnagar district of Ujjain in the afternoon and 10 laborers were killed on the spot. Fire engines and rescue team rushed to the spot and efforts were made to control the fire. According to police source, the death toll is likely to rise.