bakr al-baghdadi. but officials say the couple actually had to conduct an online search that very morning, who is the leader of isis. who it was. >> reporter: two lone wolves, who died in a fierce gun battle with police, after killing so many. >> just incredible that was a year ago tomorrow. brian here with us tonight. they had mor terror planned th day. >> that's right, david, according to authorities they left behind three pipe bombs in they were stopped by police, re they were circling the neighborhood t detonate those >>> still much more ahead on "world news tonight" this evening. the health alert for buzz aldr. >>> the manhunt for a bombing suspect. new surlae images revealed tonight. >>> the abc news exclusive that husband of the missing mother speaking out and what he now says happened moments after the vehicle, changed and beaten and howhe got help. >>> prince hrynd rihanna, worl watching and the message coaching means making tough choices. jim! you're in! but when you have high blood pressure