U.S. military exchanges have stopped selling smartphones made by two Chinese firms after the Pentagon warned the devices pose a security risk to military personnel and operations, the Defense Department said. With locations around the world, the stores sell everything from razors to laptops but will no longer be carrying mobile phones and related products manufactured by Huawei Technologies Co. or ZTE Corp. The Pentagon said it could not specify the technical aspects of the threats. \u201cHuawei and ZTE devices may pose an unacceptable risk to department\u2019s personnel, information and mission,\u201d Pentagon spokesman Major Dave Eastburn said in a statement on Wednesday. "The department is evaluating the situation and will determine the necessity of issuing further guidance." FBI Director Christopher Wray told a Senate committee in February that \u201cwe\u2019re deeply concerned about the risks of allowing any company or entity that is beholden to foreign governments that don\u2019t share our values to gain positions of power inside our telecommunications networks.\u201d Huawei said in a statement on Wednesday night that it remains "committed to openness and transparency in everything we do and want to be clear that no government has ever asked us to compromise the security or integrity of any of our networks or devices." Representatives of the ZTE could not be immediately reached for comment. The story was previously reported by Stars and Stripes.Ren Zhengfei, the founder of Huawei, is a former People\u2019s Liberation Army officer and has close ties to the Chinese government, according to American intelligence officials. In 2012, a report by the House Permanent Select Committee on Intelligence said that ZTE and Huawei were possible threats to American security interests. The committee said Huawei did not fully cooperate with investigators. The report questioned Huawei\u2019s ties with the Communist Party and - after multiple interviews that included a meeting Ren himself - it concluded that Huawei failed to properly explain that relationship. Huawei has consistently denied those accusations and says it\u2019s owned by Ren and its own employees. Separately, the FBI and other agencies have been investigating Huawei over possible Iran sanctions violations. Last month, a spokesman for the company declined to comment on that investigation or an earlier sanctions inquiry.