Kinshasa, DR Congo (AFP)—Escalating attacks have struck hospitals and other civilian infrastructure in eastern Democratic Republic of Congo during the ongoing anti-government assault by the armed group M23, the UN’s humanitarian agency said.

M23 fighters backed by Rwandan troops have made major advances in the region since January, seizing the key cities of Goma and Bukavu and displacing hundreds of thousands of people, according to the United Nations.

“Between March 1 and 3, several hospitals were targeted by armed actors in an escalation of violence against medical centres and health personnel” there, the UN Office for the Coordination of Human Affairs (OCHA) said in a report published on Saturday.

Security in Goma is threatened by “a resurgence of criminal acts including burgling of homes, thefts and attacks”, it said, adding that hospitals and schools had also been forced to close in other areas.

It said at least four civilians were killed in fighting between M23 and rival groups in the Masisi district between February 18 and 25, and more than 100,000 people were newly displaced in Lubero to the north.

DR Congo’s government accuses Rwanda of backing M23 to seize mineral-rich territory. Rwanda has denied involvement in the conflict and says it faces a threat from ethnic Hutu fighters in DR Congo.