Gunmen attacked the airport in eastern Democratic Republic of Congo's largest city, Goma, in an overnight raid that killed at least one government soldier, a local governor and a military official said on Tuesday. Witnesses in the city, home to around 1 million people and capital of Congo's volatile North Kivu province, said they heard intermittent heavy gunfire for several hours beginning around 1 a.m. (2300 GMT, Monday). North Kivu governor Julien Paluku did not identify the attackers, referring to them only as "bandits". "They attacked the depot at the airport. There was a heavy exchange of gunfire," he told Reuters.