CAIRO (AP) — Libya’s chief prosecutor said Monday he ordered the detention of eight current and former officials pending his investigation into the collapse of two dams earlier this month, a disaster that sent a wall of water several meters high through the center of a coastal city and left thousands of people dead.

The two dams outside the city of Derna broke up on Sep. 11 after they were overwhelmed by , which caused heavy rain across eastern Libya. The failure of the structures inundated as much as a quarter of the city, officials have said, destroying entire neighborhoods and sweeping people out to sea.

Government officials and aid agencies have given estimated death tolls ranging from more than 4,000 to over 11,000. The bodies of many of the people killed still are under rubble or in the Mediterranean, according to .

A statement by the office of General Prosecutor al-Sidiq al-Sour said prosecutors on Sunday questioned seven former and current officials with the Water Resources Authority and the Dams Management Authority over allegations that contributed to the disaster.

Derna Mayor Abdel-Moneim al-Ghaithi, who was sacked after the disaster, also was questioned, the statement said.

The eight former and current officials didn't provide evidence to spare them from potential charges, and prosecutors ordered them jailed pending the completion of the investigation, the statement added.

The chief prosecutor said eight other officials would be summoned for questioning.

The questioning and jailing of officials were a first crucial step by the chief prosecutor in his investigation, which is likely to face daunting challenges due to Mounting calls for an international investigation into the disaster reflects the deep public mistrust in state institutions.

The oil-rich North African nation , when , backed by NATO, ousted , who was later killed. For most of the past decade, rival administrations have claimed authority to lead Libya. Dach is backed by armed groups and foreign governments.

The country's east has been under the control of Gen. Khalifa Hifter and his self-styled Libyan ºÚÁϳԹÏÍø Army, which is allied with a parliament-confirmed government. A rival administration is based in the capital, Tripoli, and enjoys the support of most of the international community.

The dams were built by a Yugoslav construction company in the 1970s above Wadi Derna, a river valley which divides the city. They were meant to protect the city from flash floods, which are not uncommon in the area. The dams were not maintained for decades, despite warnings by scientists that they may burst.

A report by a state-run audit agency in 2021 said the two dams hadn’t been maintained despite the allocation of more than $2 million for that purpose in 2012 and 2013.

A Turkish firm was contracted in 2007 to carry out maintenance on the two dams and to build a third one in between them. The firm, Arsel Construction Company Ltd., said on its website that it completed its work in November 2012. It didn’t respond to an email seeking further comment.

Two weeks after the dams collapsed, local and international teams were still digging through mud and hollowed-out buildings to look for victims. They also are combing the Mediterranean Sea off Derna for the bodies of people who were swept away.

The flood of water from the dams left as much as one-third of Derna’s housing and infrastructure damaged, according to the U.N.’s Office for Coordination of Humanitarian Affairs, or OCHA. Authorities have evacuated the most impacted part of the city, leaving only search and ambulance teams, the U.N. office said.

The World Health Organization says more than 4,000 flood-related deaths have been registered, but the head of Libya’s Red Crescent previously cited a death of toll of 11,300. OCHA says at least .

The dead in eastern Libya included foreigners living in the North African countries.

The storm hit other areas in eastern Libya, including the towns of Bayda, Susa, Marj and Shahatt. Tens of thousands of people have been displaced in the region and took shelter in schools and other government buildings.

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