The US military has arrested an intelligence analyst who may have been responsible for leaking classified video showing a US helicopter gunship indiscriminately firing on Iraqi civilians in 2007. The website Wired.com reports Specialist Bradley Manning has been held without charge since being detained at his military base in Iraq two weeks ago. A former computer hacker told Wired he turned Manning in after Manning claimed to have released the video footage along with hundreds of thousands of classified US government records to Wikileaks, a whistleblower website. The video shows a US military gunship indiscriminately killing twelve Iraqis and wounding several others, including two children. A friend of Manning’s says Manning was hopeful that the Wikileaks video would lead to accountability for the Iraqi deaths and help prevent future killings.