The White House was put on lockdown 
Saturday morning after a nearby food vendor location suffered a small 
explosion, causing a security sweep of the area, according to a White 
House pool report.
Photos
 posted on Twitter from Will Sweet show heavy smoke from one of the food
 locations in the 400 block of 15th Street, Northwest on Saturday 
morning. D.C. fire officials said the fire was extinguished and one 
person was evaluated on the scene, but not transported to a hospital.
So this fire just broke out right outside the White House.... pic.twitter.com/jxMdPIgmRI— Will Sweet (@will_sweet1) March 7, 2015
The
 White House press pool was out on the South Lawn for the departure of 
President Barack Obama and his family to Selma, Alabama, when the 
explosion occurred. Secret Service moved the press back into the White 
House and initiated a lockdown of the building.
During
 a sweep of the area, a K-9 unit hit on a vehicle in the 1600 block of 
Constitution Avenue. The White House remains on lockdown while 
authorities check out the vehicle.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
