A man has been arrested accused of killing his brother and sister-in-law along with their unborn child.
Brent Hanson, 57, is accused of killing Clyde and Jessica Hanson, whose bodies were found in their Milbank home, in the US state of South Dakota, last Wednesday morning.
Jessica was pregnant, police said.
Hanson and Clyde are brothers, and have joint ownership of the residential property where they both live in separate spaces, the Aberdeen American News reported.
Hanson had a previous scuffle with the couple in July when he was arrested and charged with misdemeanour assault and domestic violence.
He allegedly pushed around the couple after an argument over the care for Jessica’s dog.
A statement of probable cause, obtained by US news station KELO, states Milbank Police Chief Boyd Van Vooren met with Hanson last week in which the accused allegedly told him: "I snapped."
It further alleges Hanson confessed to killing them – using a baseball bat to murder his brother and a machete on his wife. Jessica was nine months' pregnant, the court document states.
Police said Clyde was found under plasterboard and his wife under a blue tarp.
Clyde’s death was determined to have been caused by blunt force trauma to the head, while Jessica suffered multiple “slash marks and lacerations”.
Hanson has been charged with three counts of first-degree murder.
with The Associated Press
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