KUNA) -- A US Army force stormed a faculty building in Baghdad and arrested its security guards without providing any justification for the operation, spokesman of the Iraqi Ministry of Higher Education and Scientific Research Basil Al-Khatib told KUNA on Friday.The force broke into the dentistry faculty building of al-Mustansyria University western Baghdad this afternoon and arrested three security guards, Al-Khatib said, adding that members of the force went through some of the faculty's items and documents. The University's dean will hold a press conference tomorrow at the faculty to reveal details of the incident, the spokesman noted.