The University of Wisconsin-Madison Police Department says a Madison man has been taken into custody in connection with a string of thefts on campus. University police officials say since the fall semester began, the department has taken reports on more than a dozen theft cases at the Camp Randall Sports Center. In many of the cases, a thief was able to get inside the center by asking a student who was entering the building to let them in. Police say once inside, the suspects would steal items like cash, cellphones, laptops and other valuables. Officers arrested 21-year-old Samuel F. Spencer on Tuesday on charges of theft, receiving stolen property, operating after revocation, tampering with security devices and possession of marijuana. Investigators say Spencer has no affiliation with U-W-Madison. University police say they believe Spencer is a known suspect in other theft cases in Madison and across Dane County. Other charges from partner police agencies may be forthcoming.