Japan and China are at odds over compensation for a fatal leak of mustard gas in August in Qiqihar, HeilongEjiang Province, Japanese offiEcials said Sunday.

The two countries held two rounds of talks this month in Beijing, but it will probably take some time to reach an agreement, including the amount, partly because JaEpan refuses to pay compensaEtion stemming from the war, the officials said.

The poison gas was left by the Japanese military at the end of World War II.