U.S. drone crashes in Pakistan February 25, 2012 -- Updated 1936 GMT (0336 HKT) A U.S. official confirms that a drone crashed in Pakistan Pakistan officials have witnesses who saw the drone go down The cause of the crash is under investigation (CNN) -- A U.S. drone crashed Saturday in Pakistan's tribal region, U.S. and Pakistani officials said. The cause of the crash was unknown, but a U.S. official denied reports that the drone had been shot down. Two Pakistani intelligence officials told CNN that witnesses in North Waziristan reported the crash near the village of Machikhel. The Pakistanis had only these witness accounts to go by, and were working to verify the crash and its causes with its own sources, the officials said. Two drone strikes killed 12 suspected insurgents in the region on February 16. The United States does not publicly acknowledge its drone program, although President Barack Obama commented on such strikes in January and Defense Secretary Leon Panetta acknowledged the use of CIA predator drones in the region last year. The CIA did not comment on Saturday's incident. CNN's Pam Benson and Reza Sayah contributed to this report.