Malaysia began to tighten its border with the Philippines shortly after the President announced martial law, while the United Kingdom warned its citizens to avoid traveling to western Mindanao.
Malaysia mulai memperketat perbatasannya dengan Filipina tidak lama setelah Presiden mengumumkan darurat militer, sementara Britania Raya memperingatkan warganya untuk menghindari bepergian ke Mindanao barat.