In 1977, after leading a GAM attack in which an American engineer was killed and another American and South Korean engineer injured, Hasan Tiro was hunted by Indonesian military.
Pada tahun 1977, setelah memimpin serangan GAM di mana salah satu insinyur Amerika Serikat tewas dan satu insinyur Amerika lain dan satu insinyur Korea Selatan terluka, Hasan diburu oleh militer Indonesia.