Illinois prosecutors say Jerry Hobbs told investigators he was angry with his daughter for breaking curfew and tracked her down and killed the eight-year-old and her nine-year-old friend.
The details come in a bond hearing Wednesday.
Hobbs stared at the floor through the whole hearing in northern Illinois.
Prosecutors say Hobbs gave a videotaped statement in which he said he hit his daughter because she refused his order to go home. He told officials the friend came to his daughter's aid and that's when he hit her and stabbed them both.
Investigators say Hobbs stabbed his daughter multiple times, including in the neck and eyes.
He led police to the bodies Monday morning and was charged Tuesday. He was denied bail.