PM UPDATE: A twist in the case of L.A. doctor's ambush-style murder

Two days after arrests were made in the ambush-style murder of an L.A. doctor, authorities are investigating the home of his ex-wife. Thursday was the deadline to close Los Padrinos Juvenile Hall in Downey, but the L.A. County Probation Department says it has NO plans to shut it down. And is back pain motive for murder? An orthopedic spine surgeon says pain can push us to do some shocking things.