CROWLEY, La. (AP) — A 21-year-old Louisiana man has been charged with murder in the stabbing deaths of his grandfather and godmother, according to authorities.

Detrick Guillory was charged with two counts of first-degree murder, the Acadia Parish Sheriff’s Office said in a statement Thursday.

Deputies discovered John Guillory and Lois Guillory, both 71, fatally stabbed in their home in Church Point last month, according to the office.

Authorities did not comment on what led to the attack.

Detrick Guillory was being held in the parish jail without bond, officials said. It was unclear whether he had an attorney who could comment on his behalf.

Church Point is about 25 miles (40 kilometers) northwest of Lafayette.