The cries of protesters were part of a rising chorus of calls for answers from leaders across a divided Libya, specifically for an international investigation.
Thousands were killed after dams broke last week in the country’s northeast, displacing more than 40,000 people, and leaving survivors with a shortage of medical supplies and drinking water.
“The state wasn’t interested,” said an engineer who published a paper on why Derna’s dams, after decades of postponed repairs, might fail under the stress of a powerful storm.
An aid worker said hundreds of bodies at a time were being placed in mass graves. Thousands died in the floods that hit the northeast of the country last weekend.