CLARK, Philippines (AP) — An approaching typhoon is threatening to complicate the hosting by the Philippines of the largest biennial games in Southeast Asia, already marred by logistical foul-ups.

President Rodrigo Duterte has promised to investigate complaints by athletes over long hours of waiting for shuttles at Manila’s airport, getting stuck in the chaotic traffic, food and hotel accommodation issues and unfinished facilities in the city.

Duterte is set to welcome them in an opening ceremony to be lit by digital fireworks after nightfall Saturday in Bocaue town north of Manila.

Organizers say Typhoon Kammuri, forecast to blow into the main northern Luzon island early next week, could delay or even cancel the competition. The main sporting venues in Clark and Subic north and northwest of Manila are in or near the typhoon’s path.