Residents say Rwanda-backed rebels appear to be heading toward a third major city in eastern Congo. International pressure rose Tuesday over the M23’s expansion in the mineral-rich region that’s critical for global technology.

Rwandan-backed rebels have entered Bukavu, a major city in the mineral-rich east of the Democratic Republic of Congo.

Panic and looting are sweeping through eastern Congo’s second largest city as residents flee by the thousands to escape the looming advance of Rwanda-backed rebels