According to an interview with Andi Baso Tahir, an old friend of Santoso in Tokorondo village, in 2006 Santoso was arrested for robbing a boxcar in a coastal town of Poso.
Berdasarkan wawancara dengan Andi Baso Tahir, teman lama Santoso di desa Tokorondo, pada tahun 2006 Santoso sempat dipenjara karena mencuri muatan mobil boks di kota Poso.