MANILA, Philippines (AP) — Heavy rains from a storm and the seasonal monsoon caused widespread flooding Friday in the Philippine capital and nearby provinces, shutting down schools and government offices. Manila airport authorities said the rains and radar problems caused delays and the cancellation of at least 28 domestic flights to and from northern and central Philippines affected by Tropical Storm Fung-Wong. Flooded streets caused traffic gridlock across the city of 12 million, with many motorists and other commuters unaware of the extent of the flooding due to a lack of reports from local authorities. Manila Mayor Joseph Estrada said some parts of the capital were flooded overnight and residents in a number of slum communities were evacuated to safety but added that floodwaters were receding because major drainage pipes had been cleared of thrash before the rainy season.