this was severance back in march when he was first arrested in west virginia. he fled the ashburn townhome he shared with a girlfriend once he found out police were looking for him. chief cook says there was no sudden breakthrough that led to the decision to seek murder charges now. rather a steady collection of evidence as alexandria police teamed with the fbi. i assure you, the last five months has been very intensive in terms of following up on the things we needed to do to see his relationship with these cases. and that evidence that we discovered in those five months largely is why we re standing here today. reporter: the investigation does continue. cook says the guns used in the killings still have not been recovered. the relatives of victims nancy dunning and ron kirby sat in the front row of the news conference, listening. afterward, dunning s daughter made this brief statement. our family is grateful to the police and investigators to continue to pursue our mo