Mohenjo-daro

Archaeologists discovered several thousand human skeletons in Mohenjo-daro.

An excerpt from the article 26 facts about Mohenjo-daro
The city was inhabited by 40,000 to 50,000 people. Their skeletons were found in buildings and on the streets. All of them showed signs of sudden death. Some victims had bone injuries, but neither weapons nor ammunition was found in the remains. Archeologists also excluded the robbery as a possible motive, since some of the dead were found with valuables, such as bracelets, earrings, and beads.