Gwalior (MP), Mar 06 (ANI): A forest guard was killed in Gwalior on Sunday after a tractor-trolley loaded with illegally mined sand fell on him. The incident took place when a team of forest department personnel accompanied with jawans of Special Armed Force( SAF) tried to stop two tractor-trolleys loaded with the sand. The tractor driver, who drove on and knocked him down, crushing him to death, but was later arrested.