Japanese police have reportedly taken an American tourist into custody for questioning after a womans head was found in the apartment he is renting in Osaka. The head, discovered in a suitcase, is believed to belong to a 27-year-old Japanese woman seen on surveillance cameras walking into an apartment with the American man, according to Japanese broadcaster NHK. Police say the man, identified in media reports as Yevgeniy Bayraktar, a New York resident, was later seen going in and out of the apartment alone with a large bag. The woman had reportedly told friends she was going to meet with an American man shed met on an app before her disappearance. No other body parts have been found.