Suspicion in the slayings of a Texas district attorney and his wife shifted Monday to a violent white supremacist prison gang that was the focus of a December law enforcement bulletin warning that its members might try to attack police or prosecutors.
The weekend deaths of Kaufman County District Attorney Mike McLelland and his wife, who were found fatally shot in their home, were especially jarring because they happened just a couple of months after one of the county's assistant district attorneys, Mark Hasse, was killed near his courthouse office.
Police haven't revealed if they've found a connection between the two slayings, but sources tell CBS News correspondent John Miller, a veteran of the NYPD, LAPD and FBI, that they're looking into cases McLelland and Hasse worked on together.
One of the biggest involved the Aryan Brotherhood, a prison-based white supremacist gang.
"(Investigators) are looking at people who were involved with both prosecutors in trials and people who thought they were wrongly convicted -- people who would have the mans, motive and opportunity, that motive being a grudge against the D.A.'s office," Miller said.