The Rwanda-backed rebels who captured eastern Congo 's key city of Goma sought to reassure its residents Thursday, holding a stadium rally and promising safety under their administration as they try to shore up public support amid growing international pressure.

Nearly three thousand people have been killed in the city of Goma in the eastern Democratic Republic of Congo, according to the United Nations, after the provincial capital was captured by rebels following days of fierce fighting with the Congolese army.

The M23 rebel group have captured the city of Goma in the eastern DRC in a major escalation of a drawn-out conflict.

The Rwanda-backed rebels who seized a major city in eastern Congo have declared a unilateral ceasefire, citing humanitarian grounds. Monday's announcement came after the U.N. health agency said at least 900 people had died in last week's fighting between the M23 rebels and Congolese forces after the rebels seized the major city

Thousands fled the city of Goma on Monday as fighting raged between Congolese forces and rebels backed by neighboring Rwanda, who claimed to have captured eastern Congo’s largest regional hub.