As Rwanda-backed rebels strolled through the streets of eastern Democratic Republic of Congo's second-largest city, President Felix Tshisekedi's office claimed it was actually still controlled by his army and "valiant" allied forces.

DAKAR, Senegal — Rwanda-backed rebels appeared to be heading toward a third major city in eastern Congo, residents said Tuesday, as international pressure rose over the M23's expansion in a mineral-rich region that’s critical for global technology.

Gun-toting M23 fighters on Thursday watched on as requisitioned locals cleaned up streets in the eastern DR Congo city of Bukavu seized by the Rwanda-backed group. Local community group leader Bagalwa Rubakuza said that drives like the clean-ups have always been organised "without success".