The killer who killed 20 children

The suspected gunman’s parents divorced in 2009 when he was 17 years old.

His former grandmother said she remembered Adam  as a young child but didn’t know him as a teenager.

His parents had separated “years” before they divorced, she said.

The suspected gunman was a “socially awkward” teenager, a neighbor said.

The suspected gunman was kind of a loner and shy, a neighbor said.

His former grandmother ex-husband, who died in 2010, was a widower when she met him, with children and grandchildren of his own.

They married  in the 1990s and divorced in 2001, she said.