A suspect has barricaded himself in a home in New Jersey after allegedly shooting three people to death in suburban Philadelphia. Falls Township Police said in a statement that the suspect, a 26-year-old homeless man, knew the shooting victims. The Saturday morning shooting in Falls Township in eastern Pennsylvania forced the cancellation of a St. Patrick’s Day parade and shut down a children’s theme park. Authorities in Bucks County issued a shelter-in-place order for the area for several hours, but it was canceled by early afternoon.