DENVER — He was once a standout student in law school and an Army medic who deployed to Iraq.
By last weekend, he lay dead in a Colorado apartment building, killed by a SWAT team after he gunned down a 29-year-old deputy.
Matthew Riehl’s six-year descent from a budding attorney to a gunman who live-streamed some of the final violent hours of his life was accompanied by episodes of mental illness, according to police and a document from the Department of Veterans Affairs.
