WASHINGTON ( CNN ) -- Police arrested a man near the U.S. Capitol on Tuesday after he drove up to one of the building 's barricades with a rifle in his vehicle and told officers that he had a delivery for President Obama , a Senate spokesman said . A man drove to the Capitol with a rifle and said he had a delivery for President Obama , police said . Sgt . Kimberly Schneider identified the man as Alfred Brock , 64 , of Winnfield , Louisiana . She said Brock was charged with possession of an unregistered firearm and unregistered ammunition . Brock drove up to the north barricade at the Capitol late Tuesday afternoon , saying he had a delivery for the president , Schneider said . After further questioning , he admitted he had a rifle in his truck . He was arrested and taken to police headquarters for processing , she said . A search of his truck turned up several rounds of ammunition , Schneider said . Police also checked the area around the barricade , but found nothing hazardous . Threats against Obama have led to arrests in previous cases . In one , federal prosecutors concluded that three people arrested with drugs and weapons in a suburban Denver , Colorado , motel posed a `` true threat '' to Obama during the Democratic National Convention . In the second , a Florida man was charged with threatening bodily harm against the then-candidate in August . He has pleaded not guilty .
NEW : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty. NEW : Brock charged with possession of an unregistered firearm , ammunition . Police say he told them he had a delivery for President Obama . Man was arrested , transported to Capitol Hill police headquarters for processing .