READ about Piers Morgan's long career in journalism here.
On Thursday, Piers Morgan spoke with Eric Griego the uncle of Nehemiah Griego, 15, who allegedly murdered his parents and three of his siblings on Saturday in his home in New Mexico.
In addition to murder, the police claimed that the teen also intended to commit a mass shooting at the local Wal-Mart.
"He said a lot of things. Apparently, he was not in a great state of mind," said Greigo about his nephew.
Greigo also shared with Morgan that his nephew was taught how to shoot the AR-15 rifle that the teen allegedly used on his family members.
"My brother had dedicated the last 25 years of his life to try to get people who were in trouble or under addiction to turn their lives around," explained Greigo. "And by the nature of his work, there were people who were unseemly, and so he worried for the welfare of his family."
"The way he chose to deal with it was he thought his oldest son should be, essentially when he wasn't around, as this night that this terrible thing happened, that he should be able to know how to shoot the weapon and know how to protect his family."
Also on the program, football legend John Elway joined Morgan in studio and discussed the recent controversy surrounding football player Manti Te'o.
"Here is the question I never thought I would ask John Elway, have you ever had a fake girlfriend?" joked Morgan.
"No, I never have," Elway responded as he laughed.
Elway reminded Morgan of Te'o's talent as an athlete which now has been overshadowed by the Notre Dame linebacker's "virtual" love file.
"He's [Te'o] a good player, a good football player," said Elway. "I think Manti has a tremendous reputation on the football field."
Watch the clips and listen to the interview as Elway considers whether fake girlfriends would boost the playing ability of the Broncos where Elway is the executive vice president of football operations.