Police and bomb squad personnel rushed to the scene in Tambon Tha Toom at 10.30am. Grandmother Jamnian Budda, 39, lost her right arm in the explosion while her granddaughter Thidarat Sang-ondee sustained shrapnel wounds to the head and torso. The girl later succumbed to her injuries at Chaopraya Abhaibhubet Hospital.

Pol Captain Chakkapol Jaicheum of Sri Maha Pho Police Station said Jamnian’s former husband Sakchai Budda, who frequented the house despite their separation a year before, told police that Jamnian followed the girl to a bedroom where they found an explosive on the floor and the child picked it up. As Jamnian tried to take it away, the bomb dropped to the floor and exploded.

Prachin Buri bomb disposal team leader, Pol Lieutenant Thewan Phumthan, said the bomb was made with explosive powder and nails wrapped in black duct tape and was initially suspected to belong to the friend of Jamnian’s son who had stayed in the house recently.