HONG KONG: A Chinese national arrested in Hong Kong for allegedly murdering his two teenage nephews in the United States has been extradited back to the US, city police said on Sunday. Shi Deyun, 44, was detained at Hong Kong’s international airport in January after arriving on a flight from Los Angeles. He is accused of murdering his nephews, aged 15 and 16. “Wanted for two cases of murder…(he) was extradited to the United States of America from Hong Kong on April 15,” a police spokesman told Agence France-Presse in an emailed statement. Media re-ports said Shi was heading to mainland China when he was arrested on January 24, but he has denied fleeing, say-ing that he was heading to the southern city of Shenzhen via Hong Kong to deal with business. Unlike Hong Kong, mainland China does not have an extradition treaty with the United States.