The boys, aged 4 and 8, were half brothers. They were reported missing Sunday evening after the father of the youngest boy had a telephone conversation with the mother that left him feeling something was wrong.
The woman called the father of the 4-year-old boy on Sunday. "She said something scary and strange had happened with the children," the father told Aftonbladet.
Police divers found the boys' bodies in the water near a dock in Sigtuna, north of Stockholm, on September 19.