kuala lumpur malaysia arrest seven philippine men suspect involvement activities abu sayyaf militant group police say thursday concern grow southeast asia possible expansion militant islamist activity abu sayyaf whose members pledge loyalty islamic state notorious bomb behead extortions kidnap-for-ransom activities philippines volatile south men work security guard private company capital kuala lumpur surround state selangor inspector-general police mohamad fuzi harun say one suspect 22-year-old abu sayyaf group member involve clash military kidnap hostages southern philippines say statement extremist faction abu sayyaf help seize large part marawi city southern philippines may lead siege kill 670 militants 149 soldier reuters could reach men seek comment custody immediately clear lawyers represent malaysian police say arrest base information receive authorities thwart plan abu sayyaf member stage attack close ceremony southeast asian game kuala lumpur last month seven men arrive malaysia september 2015 town sandakan state sabah borneo island southern coast philippines travel kuala lumpur forge document mohamad fuzi say since 2013 muslim-majority malaysia detain 300 people suspect link islamic state year malaysia arrest 41 foreigners classify foreign terrorist fighters mohamad fuzi add governments southeast asia worry possible expansion islamic state group lose grind middle east malaysia arrest seven suspect involvement abu sayyaf militant group