Jordan's armed forces said one of its pilots had been captured after his plane fell during an air raid over the north-eastern Syrian province of Raqqa on Wednesday. "Jordan holds the group and its supporters responsible for the safety of the pilot and his life," an army statement read on state television said. The Syrian Observatory for Human Rights, an anti-Syrian government activist group based in Britain, earlier reported the aircraft was brought down in an area controlled by Islamic State of Iraq and al-Sham (ISIS) militants. "We have confirmed reports that ISIS members took a [non-Syrian] Arab pilot prisoner after shooting his plane down with an anti-aircraft missile near Raqqa city," the Observatory said.The Observatory, which relies on a wide network of sources inside Syria, said ISIS used a missile taken from Syrian rebels battling president Bashar al-Assad's regime. The ISIS branch in Raqqa published several photographs on jihadist websites purporting to show its fighters holding the captured pilot, with a caption identifying him as Jordanian. The photographs show the pilot, wearing only a white shirt, being carried from a body of water by four men, and also on land, surrounded by about a dozen armed men. Another image shows the pilot's military identification card, showing his name as Maaz al-Kassasbeh, his birthdate as May 29, 1988, and his rank of first lieutenant. The images were verified by two close relatives contacted by Reuters who said they had been notified by the head of the Jordanian air force the pilot was held captive.However, the U.S. officials did not agree with the Observatory group. White House has rejected ISIS's and the Observatory Group's claim that ISIS militants shot down a coalition jet in Syria, and termed the capture of a Jordanian pilot a result of an aircraft crash. The "evidence clearly indicates that ISIS did not down the aircraft as the terrorist organization is claiming," the U.S. Central Command said in a statement Wednesday. "The Jordanians are highly-respected and valued partners, and their pilots and crews have performed exceptionally well over the course of this campaign. We strongly condemn the actions of ISIS which has taken captive the downed pilot. We will support efforts to ensure his safe recovery, and will not tolerate ISIS's attempts to misrepresent or exploit this unfortunate aircraft crash for their own purposes," the statement said. General Lloyd J. Austin III, the commander of U.S. Central Command was quoted in the statement, who oversees all coalition military operations in Iraq and Syria.Jordan is among a number of countries that have joined the US-led alliance carrying out air strikes against ISIS after the militants seized control of large parts of Syria and Iraq. Saudi Arabia, the United Arab Emirates, Jordan and Bahrain are taking part in the air strikes in Syria alongside the US. Australia, Belgium, Britain, Canada, Denmark, France and The Netherlands have joined the raids in Iraq.