MANILA - Foreign Islamic State fighters forced out of Syria and Iraq have been arriving in the Philippines with the intent of recruiting, and they have plans to attack two Philippine towns, the head of the country's largest Muslim rebel group said on Tuesday.More than 1,100 people were killed last year when pro-Islamic State militants attacked and held the Philippine city of Marawi for five months, leading to massive destruction across the scenic lakeside town.That could happen in other cities if Congress fails to pass a law to allow Muslims in the southern Philippines to run their own affairs, according to Ebrahim Murad, leader of the Moro Islamic Liberation Front, a separatist group which signed a peace deal with the government in return for greater autonomy."Based on our own intelligence information, foreign fighters who were displaced from the Middle East continued to enter into our porous borders and may be planning to take two southern cities - Iligan and Cotabato," Murad said.The two cities are 38 km (24 miles) and 265 km (165 miles) respectively from Marawi.Murad said fighters from Indonesia, Malaysia, and the Middle East were known to have entered the Philippines, including a Middle Eastern man holding a Canadian passport.That man went to a stronghold of the Abu Sayyaf militant group, notorious for kidnapping and piracy, Murad said. Murad said militants had been recruiting fighters in remote Muslim communities, exploiting delays in the passage of legislation aimed at addressing long-standing Muslim grievances, the Bangsamoro Basic law (BBL)."These extremists are going into madrasas, teaching young Muslims their own version of the Koran, and some enter local universities to influence students, planting the seeds of hatred and violence," he said.Such a scenario would be a major headache for the military, which is fighting on multiple fronts on the southern island of Mindanao to defeat home-grown Islamic State loyalists, bandits and communist insurgents.Mindanao is under martial law.The military has said remnants of the militant alliance that occupied Marawi were trying to regroup and were using cash and gold looted from Marawi to recruit.Murad's statement echoed those of President Rodrigo Duterte, who last month urged lawmakers to pass the BBL, or face re-igniting war with separatists after two decades of peace."We cannot decisively win the war against extremism if we cannot win the peace in the halls of Congress," Murad said.