ISLAMABAD: As the lingering dispute over immunity for the detained CIA official Raymond Davis continues, Pakistan's law enforcement agencies have arrested yet another US national on Friday from Peshawar on suspicion of espionage.According to sources, Aaron Mark Dehaven , locally known by the name of Ahmed Haroon was a US national from West Virginia illegally living in Peshawar, as his visa had expired on 23 October 2010.He was arrested from Jamrud Road and was taken by intelligenc agencies to an undisclosed location for interrogation.Well-placed sources told TOI that Dehaven had been living, for the past three years, in Peshawar's Falcon Colony, one of the most secured residential areas in the city. He had set up a private office in the country's volatile city and had hired several locals.Sometimes back, he was converted to Islam and married a local woman working in his office.Sources claimed that Dehaven was originally tasked to provide security to the visiting US officials to Peshawar.Intelligence officials have confiscated his vehicle, carrying Islamabad's number plate---QB 565 and two cell phones.A case has been filed against him under the Foreigners Act and he will be produced in a local court on Saturday.Without specifying his status, the US embassy said they were looking into the matter.According to Pakistan's minister of state for foreign affairs Hina Rabbani Khar, 2,570 officials from 78 different countries working in Pakistan have diplomatic immunity while 55 foreign national are not covered by the immunity blanket.Presenting a list of foreign nationals enjoying diplomatic immunity in the National Assembly, she said that the US has 851 officials in Pakistan and 54 of them do not have diplomatic immunity. Khar also said that the US had the largest number of officials with diplomatic immunity in the country.