After many failed attempts at reconciliation between the king and his designated heirs, the ailing Herod had Aristobulus and Alexander strangled on charges of treason in 7 BC, and raised Antipater to the rank of his co-regent and heir apparent.
Following many unsuccessful attempts to reconcile the king with his chosen heirs, the ill King Herod had Aristobulus and Alexander murdered for treason in 7 BC, and appointed Antipater as his co-ruler and successor.