Mentally Ill White House Shooter "Blended In" With Occupy DC

From Yahoo.com comes this disturbing report:

ABC News has learned authorities are increasingly concerned that a man sought in connection with a bizarre shooting incident on the Washington Mall last week may pose a threat to President Obama.

The Secret Service now suspects that a bullet fired in this incident may have hit the White House after a bullet round was found in a White House window, though the round had not yet been conclusively linked to the incident.  The round was stopped by ballistic glass behind the historic exterior glass, while an additional round has been found on the exterior of the White House.

Authorities suspect Ortega has been in the area for weeks, coming back and forth to the Washington Mall.  Before the shooting, he was detained by local police at an abandoned house. U.S. Park police say Ortega may have spent time blending in with Occupy D.C. protesters.