Flooding caused by some of the Philippines' heaviest rains on record submerged more than half the capital Tuesday, turning roads into rivers and trapping tens of thousands of people in homes and shelters. The government suspended all work except rescues and disaster response for a second day, AP reported. At least seven people have died, including four who drowned north of Manila on Monday. There were no reports of fresh fatalities Tuesday. The dead included a 5-year-old boy whose house was hit by a concrete wall that collapsed, and a 3-year-old boy who fell into a swollen river in Mariveles town in Bataan province. Four people are missing. Throughout the sprawling, low-lying capital region of 12 million people, offices, banks and schools were closed and most roads were impassable. People stumbled through waist- or neck-deep waters, holding on to ropes strung from flooded houses. More than 200 evacuation centers were opened in Manila and surrounding provinces, filled with tens of thousands of people, Social Welfare Secretary Corazon Soliman said. Overall, more than 600,000 people have been affected by the floods.