Right now. Good evening. For much of the afternoon, our eyes have been closely trained on a lake near the scene of the San Bernardino terror massacre where fbi divers have been engaged in a new search for critical evidence, one Authorities Say could go on for days. In addition to tracking the physical and digital trail of this husband and wife team of killers, weve learned investigators are also now taking a harder look at the couples family tree, after discovering some relationships that raise nude questions about them and those close to them. Heres nbc Miguel Almaguer with late details. Reporter today the fbi sent divers to search a lake three miles from where the shooting took place. Authorities say it was related to their investigation, but declined to say how. We are seeking evidence of anything that had to do with this particular crime. Reporter investigators continue enrique marquez. Speaking freely to the fbi after going on a drinking binge following the massacre and now feels