A Russian-made airplane crashed Thursday in central Congo, killing 10 of the 11 passengers aboard, officials said. The Antonov-26 went down 28 kilometers (17 miles) north of Kisangani, said Mouhamoud Hashi, an official with the U.N.'s humanitarian-aid coordination bureau in Congo. "According to the information we have received, one passenger survived but ten others who were aboard are dead," The Associated Press quoted Hashi as saying by telephone from Kisangani. The cause of the accident wasn't immediately known. U.N. radio reported that the plane left from the town of Isiro, a few hundred kilometers (miles) northeast of Kisangani, a main city on a bend in the Congo river.