have police identified a motive yet? >> reporter: craig, one dead among four shot, among 12 injured, among eight separate incidents spread out across three cities in this degraphic location. the numbers are unbelievable. police were very dedicated and focussed on a singular digit, which is one, one person in custody. according to police, went into custody without incident after they tracked him down at a routine traffic spot. there wasn't a shootout. i said that without answering your question because we don't know the motive. it sounds like based upon what police have said in statements in news conferences that they have no idea what the motive is. they are trying to connect the dots on the geographic significance of a shooting so widespread. they are still in the beginning stages of that. among the 12 injured, it sounds