WASHINGTON - The U.S. Secret Service confirmed on Wednesday that it had "detained" a person near the Vice President’s mansion in D.C.READ MORE: US Secret Service makes 3 arrests in DC on Inauguration DayThey declined to say what the person had done to prompt the response from law enforcement near Number One Observatory Circle, nor did they say whether the person would face criminal charges.READ MORE: DC police has surveillance video of Secret Service shooting, Fox News sources sayAccording to the Secret Service, they picked up the person in the 3400 block of Massachusetts Avenue.Download the FOX 5 DC News App for Local Breaking News and WeatherThey told FOX 5 that D.C.