The carcass was cleared on Monday (8 Sept) morning, and no foul play was suspected.
The man claimed he had nowhere to live and could not contact his parents.
He accidentally held on to a concrete barrier, which had a power line running through it.
Volunteers removed six rats from the cluttered flat, where the elderly siblings had reportedly slept beside a dead rat.
It probably had mala for dinner.
Several areas in Bangkok were recently flooded due to heavy rains.
No injuries or damage to artwork were reported.
However, some students claim the outbreak was caused by water pollution.
The man pleaded guilty to one charge of assaulting a public servant and another miscellaneous offence.
Pollutive vehicles will also be slapped with steeper surcharges.