1.   The rivers and major canals flowing through the city carry much of the untreated sewage from houses and industries.

2.   In the mass panic, tens of thousands fled to the Isolo area and ran into a major canal complex.

3.   Most of those who died were children fleeing the explosion, trampled to death or drowned in a major canal complex.

4.   On Monday, hundreds of those who fled were found drowned in a major canal, many of them children.

5.   Tens of thousands of people fled to the Isolo area which is bisected by a major canal complex, and hundreds drowned.