Discovery of one pipe bomb confirms Eric Matthew Frein 's presence in wooded area , investigator says . Poring through a variety of clues . Suspect may have been spotted within night . He is being sought in the death of Byron Dickson . Cpl in a a couple of years ambush .
Discovery of one pipe bomb confirms Eric Matthew Frein 's presence in wooded area , investigator says . Suspect may have been spotted within night . He is being sought in the death of Byron Dickson . Cpl in a a couple of years ambush .