Police arrest a 21-year-old man on Wednesday - suspected of shooting at the White House last week.<br/> Officials said Oscar Ortega-Hernandez was picked up by troopers at a hotel near Indiana, Pennsylvania - about a four-hours drive from Washington.<br/> Earlier in the day, U.S. Secret Service had said federal agents found two bullets hit the mansion after Friday's shooting.<br/> One struck a protective window and another struck the building's exterior.<br/> No one was hurt in the incident - and President Barack Obama and First Lady Michelle were not in the building.<br/> The shooting is under investigation.<br/> Sarah Irwin, Reuters.
