 (Photo: Patrick Henningsen 2016)News LineThe White House was placed on lockdown when a suspicious package was thrown over a fence onto the North Lawn a few minutes after Barack Obama had arrived, officials reported.The unidentified perpetrator, reportedly a woman, was immediately taken into custody, and the container is currently being checked by security. Fire trucks and hazardous materials response units were dispatched to the area.The incident comes just a week after an alert was raised when party balloons flew over the White House and landed on the roof of the press office and Eisenhower Executive Office Building.READ MORE WHITE HOUSE NEWS AT: 21st Century Wire White House Files