and other evidence, we are releasing photos of these two suspects. they are identified as suspect one and suspect 2. they appear to be associated. suspect 1 is wearing a dark hat. suspect 2 is wearing a white hat. suspect 2 set down a backpack at the site of the second explosion just in front of the forum restaurant. we strongly encourage those who were at the forum restaurant, who have not contacted us yet to do so. as you can see from one of the -- from one of the images, suspects 1 and 2 appear to be walking together through the marathon crowd on boylston street in the direction of the finish line. that image was they walked on boylston in the vicinity of the intersection with glouster street. as you can see the quality of the photos is quite good but we will continue to work on developing additional images to improve their identification value.