. >> tonight one man's in the hospital and a search is under way for whoever left that e exploeive. >the package was dropped off outside an apartment at 8th and vine street. randy, do police have any idea about who sent it? >> reporter: not any idea. we just finished up a news conference here at atf headquarters? explosive life something that's rare if ever seen. they have examining it at the atf headquarters to discover how it was made and who made it. the outside looked like your typical package delivery. it was left on a stoop on pine street. it even had the victim's name on it. but inside, it was filled with shrapnel and a trigger system. >> it was constructed so that when you open it, did debt nighted. >> the man had just gotten home from a trip, he grabbed it thinking it was his medication. >> he opened it thinking it was something he needed and that's when the bomb went off.