Emails and essays obtained by CBS News shed new light on Thomas Matthew Crooks, the 20-year-old who opened fire at a Trump rally in Butler, Pennsylvania.

“Much bleeding took place, so I realized then what was happening. GOD BLESS AMERICA!” The FBI has named the shooter as Thomas Matthew Crooks. In a statement, the agency said: “The FBI has ...

"The FBI has identified Thomas Matthew Crooks, 20, of Bethel Park ... and immediately felt the bullet ripping through the skin. Much bleeding took place, so I realized then what was happening." ...

Secret Service agents jumped into action to rush a bleeding Trump offstage immediately ... Would-be Trump assassin Thomas Crooks visited gun range dozens of times — including Christmas ...

Donald Trump and would-be assassin Thomas Crooks started on their violent collision ... and immediately felt the bullet ripping through the skin. Much bleeding took place, so I realized then ...

The employer of Thomas Matthew Crooks, the shooter in former President ... and immediately felt the bullet ripping through the skin. Much bleeding took place, so I realized then what was happening.

Law enforcement named the suspected shooter as Thomas Matthew Crooks of Bethel Park ... Verified by NBC, the pictures show him bleeding and surrounded by security agents. On July 14 it was ...

The gunman was identified as 20-year-old Thomas Matthew Crooks, of Bethel Park ... of coffee flashed pictures of the former president bleeding from the ear next to the words “Bethel Park.” ...