It remains unclear who was responsible for the strike.
A two-year offensive by M23 rebels who are allegedly backed by Rwanda, has moved closer to Goma in recent months, prompting thousands to seek refuge in the city from surrounding areas.
The head of the Lac Vert district where the air strike occurred, Dedesi Mitima, said he saw the bodies of seven children and two men.
Several other people were wounded and the death toll could rise further, Mitima said.
Efforts to reach military authorities were futile because they did not immediately respond to a request for comment.
Forum