(Montgomery County, MD) — The Montgomery County man convicted in the 2017 death of a man who was helping him dig tunnels under his Bethesda home will serve nine years in prison. Daniel Beckwitt was sentenced today in the death of Askia Khafra. Beckwitt was found guilty of second-degree murder and involuntary manslaughter in April. Khafra was digging tunnels under Beckwitt’s home for an underground nuclear bunker. The victim was killed when the home caught fire. Prosecutors say Beckwitt recklessly put Khafra’s life in danger.