DA questions Heuermann in courtroom

Nicolette Brainard-Barnes, daughter of victim Maureen Brainard-Barnes, wipes away tears as Heuermann is sworn in to admit to his actions.

The judge praised the lawyers in the case, both prosecutor and defense attorney. "They have both been excellent lawyers," Mazzei said.

Suffolk District Attorney Ray Tierney is questioning Heuermann directly.

Melissa Barthelemy is first to be discussed.

"Yes," Heuermann says when asked if he was with Barthelemy and caused her death in 2009.

"Strangulation," he says when asked how.

Same for Megan Waterman: "Strangulation."