A Northwest Airlines DC-10 made an emergency landing in Tehran on Sunday after an indicator detected a fire in the cargo hold in what turned out to be a false alarm, The Associated Press quoted a spokesman as saying. No injuries were reported, and the plane later took off and landed safely at its destination in the Netherlands, some eight hours late. The plane, which was en route from Mumbai, India, to Amsterdam, the Netherlands, had 255 passengers and crew, according to the spokesman for the Iranian civil aviation authority.