WASHINGTON (AFP/Reuters) The US Army opened a criminal probe Tuesday into the leak of some 90,000 classified military files on the Afghan war, the Pentagon said, naming a jailed soldier as a person of interest. Bradley Manning, a 22-year-old private charged in an earlier leak to WikiLeaks, was under renewed scrutiny in the latest release to the same whistleblowers website, Pentagon Press Secretary Geoff Morrell said. He is obviously a person of interest with regards to this leak but we dont know at this point, Morrell told MSNBC, referring to Manning. The investigation was assigned to the same Army Criminal Investigation Division that has been investigating Manning, who was arrested in May for allegedly leaking a video of a Baghdad airstrike to WikiLeaks. Colonel Dave Lapan, a Pentagon spokesman, said the agency would be taking a broad look at the latest leaks, a trove of 92,000 military reports from 2004 to 2009 that together paint an unsettling picture of a troubled war effort. The current investigation into the release of the documents to WikiLeaks, this recent release, isnt focused on any particular individual. It is a broader look, he said. The Pentagon is conducting a separate assessment into the potential damage to security caused by the latest Wikileaks expose, Lapan said. Manning, who is in a military prison in Kuwait, has been charged with transferring classified information onto a computer, adding unauthorised software to a classified computer system, and passing defence information to an unauthorized source. The Pentagon also said on Monday it was launching a manhunt to find whoever leaked the documents, one of the largest security breaches in US military history. More leaks were possible, US defence officials acknowledged. The Pentagon said its review of the documents being made public by the organisation WikiLeaks would take days if not weeks and that it was too soon to assess any damage to national security. Still, US military officials played down any revelations within the documents revealed so far, saying they appeared to be low-level assessments that largely confirm the militarys publicly stated concerns about the Afghan war. The scale of (the leak), the scope of it, is clearly alarming. I dont think the content of it is very illuminating, Morrell said. Asked whether WikiLeaks also might come under scrutiny, Pentagon officials said that historically the leakers have been the ones targeted for criminal prosecution - not those who merely publish the information. I dont know whats going to happen here. This is a whole new world that we are entering into where an organisation without any editorial judgment, beholden to nobody, is soliciting classified information from people all over the world and then publishing it, Morrell said. I dont know. Im not a lawyer but people are going to have to make judgments about whether there are legal ramifications for soliciting a criminal act.