SIOUX FALLS, S.D. -

The mother of a 7-year-old boy who was found murdered in a trailer home north of Sioux Falls Sunday has requested that his name be released the Minnehaha County Sheriff's Office says.

Capt. Jason Gearman with the Minnehaha County Sheriff's Office says that the mother Cassandra Otto, had her son, Brayden Robert-Emil Otto under the care of his grandmother, Carol Simon when they both were murdered.

Heath Otto, 24, has been arrested and charged with two counts of first-degree murder for killing Simon and Brayden. Heath was Brayden's uncle.

Heath is being held on a $5 milllion cash only bond.