The charred corpses of two men, both with knife wounds, were found Monday morning after a fire broke out in a building in Minato Ward, Tokyo, leading police to investigate the case as a possible murder-arson.

The fire broke out at around 7:40 a.m. in the fourth-floor accounting office of financial and commodities futures dealer Ace International Inc., the Tokyo Fire Department said.

The bodies were later identified as those of Yasufumi Yamamoto, 41, the firm's managing director; and Teruo Kondo, 49, chief of the management department, according to the Metropolitan Police Department.