From NBC News.

A medical examiner ruled that 27-year-old Shane Devon Tamura, the gunman who killed four people in New York City, had a degenerative brain disease. This comes after authorities say Tamura left a note at the scene of the July 28 shooting, expressing anger that his mental troubles may have been linked to playing football and requesting his brain be studied for CTE.

For more context and news coverage of the most important stories of our day, click here: https://www.nbcnews.com

» Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC
» Subscribe to Here’s the Scoop podcast: https://www.nbcnews.com/heres-the-scoop-daily-podcast

NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features NBCNews.com, MSNBC.com, TODAY.com, Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows.

Connect with NBC News Online!
NBC News App: https://apps.nbcnews.com/mobile
Breaking News Alerts: https://link.nbcnews.com/join/5cj/breaking-news-signup?cid=sm_npd_nn_yt_bn-clip_190621
Visit NBCNews.Com: http://nbcnews.to/ReadNBC
Find NBC News on Facebook: http://nbcnews.to/LikeNBC
Follow NBC News on Twitter: http://nbcnews.to/FollowNBC
Follow NBC News on Instagram: http://nbcnews.to/InstaNBC

#NFL #CTE #Shooting