Brett Wilshe, a friend of Ryan Lanza's, said he sent him a Facebook message Friday asking what was going on and if he was OK.
According to Wilshe, Lanza's reply was something along the lines of: 'It was my brother. Oh my God.' Adam Lanza shot his mother at her home before driving in her car to the elementary school and shooting dead 26 people before turning the gun on himself Sandy Hook Elementary School is in Newtown, Connecticut, where Nancy Lanza lived.
Parents who had not already been united with their children at the nearby fire station were told to assume the worst.
One witness told WCBS: 'Police just told us everyone presumed missing is in the school and they are dead.'Lanza used to be a mild-mannered student in high school, making the honor roll, and living with his mother, Nancy Lanza, who in turn loved playing dice games and decorating their upscale home for the holidays.
This afternoon, I spoke with Governor Malloy and FBI Director Mueller.
Speaking inside the St Rose of Lima church in Newtown tonight, Governor of Connecticut Dan Malloy said: 'In the coming days and in the coming weeks, I will pray that you all embrace one another that you lift one another up, that you understand the difficulties that you collectively will undergo.
Five children died and 30 others were wounded including one teacher.
He then shot himself.'If we get more information and as we get more information, we'll certainly provide it to you.
She said she hadn't heard anything official about her daughter and grandsons. Ryan Lanza had been extremely cooperative and was not under arrest or in custody by Saturday morning, but investigators were still searching his computers and phone records.
He told law enforcement he had not been in touch with his brother since about 2010.