The Democratic Republic of Congo’s foreign minister Therese Kayikwamba Wagner has urged soccer clubs Arsenal, Bayern Munich and Paris St Germain to end their "blood-stained" sponsorship agreements with "Visit Rwanda" following the worsening humanitarian crisis in the country.

Rwanda's ally Uganda, unhappy about another rebel group in DR Congo that threatens its security, has also been accused of helping the M23 - with its officers also spotted at Tchanzu. The UN experts say Uganda has also supplied weapons, hosted rebel leaders and allowed cross-border movements of M23 fighters - accusations Kampala denies.

The Rwandan-backed armed group M23 moved south as it closed in on a key military airport in DR Congo on Friday, a day after pledging to take the capital Kinshasa and as international criticism mounted.

Congolese troops have fought back against Rwanda-backed rebels who the U.N. says are moving fast into the South Kivu province after seizing the region’s largest city and an international airport

More than 700 people have been killed and 2,800 injured in just five days since fighting escalated in the east of the Democratic Republic of Congo (DRC) between January 26-30, UN Secretary-General spokesperson Stephane Dujarric told reporters Friday.

Authorities confirmed 773 bodies and 2,880 injured persons in Goma's morgues and hospitals, Congolese government spokesperson Patrick Muyaya told a briefing in the capital, Kinshasa, adding that the death toll could be higher.