More than 200 people have been killed in a mine collapse in eastern Democratic Republic of Congo, rebel authorities have said. The mine, in the town of Rubaya, collapsed on Wednesday due to heavy rains, Lumumba Kambere Muyisa, spokesman for the North Kivu region's rebel governor, informed reporters, adding that the full extent of the death toll was initially unclear.

Among those trapped were women and children, many of whom were engaged in mining coltan—a mineral essential for electronics production. A former supervisor disclosed to BBC reporters that improper maintenance of the site significantly raised the risk of such accidents and hampered rescue efforts once they occur.

The site is characterized by fragile soil conditions, which contributed to the collapse, it was reported. Survivors include approximately 20 individuals receiving treatment at local hospitals. The local community has expressed deep sorrow over the incident, highlighting the profound loss felt by families.

Governor Erasto Bahati Musanga, appointed by the M23 rebels, has visited the site to support affected families and survivors. The M23 group has controlled Rubaya since 2024, and international observers suggest that they benefit financially from the mining activities in the region.

Rubaya's mines account for roughly 15% of the global coltan supply, which is critical in producing high-performance capacitors used in various electronic devices. The government's response to this tragic event remains awaited, amid questions surrounding the maintenance and safety protocols at the site.