Singapore has arrested five suspected Islamic militants under tough security laws allowing detention without trial, the government said. Four of the five arrested between November and April are alleged members of Jemaah Islamiyah (JI), blamed for the 2002 Bali bombings in Indonesia among other attacks, the home ministry said. Ishak Mohamed Noohu, one of those detained, is a senior member of JI’s Singapore wing and has undergone militant training in the Philippines, it added in a statement late Friday. He was also involved in several plans by JI to attack foreign targets in Singapore as well as a plot to hijack a plane and crash it into Changi Airport, the statement added. Another detainee, law lecturer Abdul Basheer Abdul Kader, was a “self-radicalised” militant who planned to pursue jihad in Afghanistan. Such cases are “a troubling new phenomenon today of individuals who are self-radicalised, independent of direct recruitment by established terrorist groups,” said the ministry. All five are held under Singapore’s Internal Security Act, which allows for detention without trial.