Rwanda-backed rebels in eastern Congo claimed Friday to have seized a second airport in the region following a days-long advance, as the U.N. warned that the recent escalation of fighting with government forces has left 350,

Trucks and cars full of Congolese soldiers carrying their weapons could be seen circulating in Bukavu, South Kivu province on Friday. It came as Rwanda-backed rebels in eastern Congo claimed that they have seized a second airport in the region following a days-long advance.

M23 rebels in the east of the Democratic Republic of Congo have captured the airport serving the key city of Bukavu as they continue their advance. The militants' progress comes despite international calls for a ceasefire and a resumption of peace talks.