MAS Slamet Kastari is one of the main figures of the Jamaah Islamiyah in Singapore. The 42-year-old of Javanese-Malay descent and father of five, is awaiting the verdict of the Negeri Dumai Court in Riau, on charges of falsifying immigration documents. Two years ago, State Prosecutor Sri Kuncoro demanded that Kastari be sentenced to three years imprisonment.

His name first emerged when he appeared as a witness in the secession case involving Ustad