Beginning in 113 BCE, Hyrcanus began an extensive military campaign against Samaria. Hyrcanus placed his sons Antigonus and Aristobulus in charge of the siege of Samaria. The Samaritans called for help and eventually received 6,000 troops from Antiochus IX Cyzicenus. Although the siege lasted for a long, difficult year, Hyrcanus was unwilling to give up. Ultimately, Samaria was overrun and totally destroyed. Cyzicenus' mercenary army was defeated and the city of Scythopolis seems to have been occupied by Hyrcanus as well. The inhabitants of Samaria were then put into slavery. Upon conquering the former Seleucid regions Hyrcanus embarked on a policy of forcing the non-Jewish populations to adopt Jewish customs.