The latest revelations about Cruz's history came as thousands gathered at an anti-gun rally at Fort Laredale in Florida, some 25 miles from the school where 17 people were killed by Cruz on Wednesday.
James Snead says before Cruz moved in with them, he had seen him around the house on occasion because he was a friend of the couple's son.
The family that took in the suspected Florida shooter, Nikolas Cruz, said they were unaware of his disturbing past and thought they could help him.
President Donald Trump lashed out at the FBI Saturday night, saying the agency "missed all of the many signals" sent by the suspect in the Florida school shooting and arguing they are "spending too much time trying to prove Russian collusion with the Trump campaign".
As reported by CNN, the Marjory Stoneman Douglas High School shooter spoke to five other people in the chat - which was named "Murica (American flag emoji) (eagle emoji) great" by Cruz - about his hatred for "jews, ni**ers, immigrants". And less than a year ago, the former Junior ROTC cadet bought a military-style AR-15 rifle.
Though they don't know how many weapons Cruz owned - and acknowledge there were a few, including pellet guns - they had asked him to provide paperwork proving the guns were purchased legally.
He had asked only twice since November.
"The families will spend a lifetime wondering how this could happen, and an apology will never give them the answers they desperately need", Scott said.
The couple maintains they were unaware of Cruz's apparent plan to shoot up Marjory Stoneman Douglas High School on Valentine's Day.
Nikolas Cruz appears in Broward County Court on February 15, 2018, in Fort Lauderdale, Fla.
People who knew Mr Cruz have described the student as troubled.
Cruz called her "a useless b***h", along with other profanities she declined to share with the police.
But the Sneads added that they were struck by some of Cruz's mannerisms, including his apparent inability to care for himself. He noted that the YouTube user who reported the comment lives in MS and said that investigators saw nothing to link it to Florida.
The Sneads said taking him in was the right thing to do.
Several speakers took to an elevated stage to pray for those who died, the injured who are recovering in the hospital and the first responders and school staff who worked valiantly to keep them safe.
"We knew he had one Instagram account that my son had and I guess that would be the normal one". Cruz, who is diagnosed with autism and attention deficit-hyperactivity disorder, has a history of openly sharing anti-semitic, racist and homophobic views on social media.
A counselor at the school told the Florida Department of Children and Families investigators that a professional from the mental health facility had visited Cruz and "found him to be stable enough [to] not be hospitalized".