Omaha police are warning of an apparent scam in which residents are receiving automated calls from someone claiming to be a security company authorized by the city police department. Police issued a news release Thursday that indicates citizens have questioned the department about the calls; they’re being told that the company has been authorized by the police to install security systems. Police say the department hasn't partnered with any security companies and that the calls appear to be a scam. They warn against given personal information to such callers.