>> in northern ireland, police are questioning gerry adams over a murder committed by the ira 30 years ago. sinn fein has denied any involvement in the disappearance and killing of jean mcconville. >> killed and buried in secret the irish mother of 10 was disappeared by the irish republican army just before christmas in 1972. the ira admitted her killing in 1999 and her body was discovered under the speech in 2003. the murder haunted gerry adams of sinn fein for decades. >> i regret that anybody was killed by our group and i was one of those who brought the conflict to an end. obviously we support those people who have been injured and there is a lot of work that has been done by all of us with the healing process. >> despite acting as the head of