Most of official Washington believes that Russia was behind the hacking of Democratic National Committee emails. But some supporters of President Trump have been pushing an alternate theory: that Seth Rich, a DNC employee, stole the emails and gave them to WikiLeaks — and for doing so became the victim of an unsolved murder. Chip Reid reports.

Subscribe to the “CBS Evening News” Channel HERE:
Watch Full Episodes of the “CBS Evening News” HERE:
Watch the latest installment of “On the Road,” only on the “CBS Evening News,” HERE:
Follow “CBS Evening News” on Instagram:
Like “CBS Evening News” on Facebook HERE:
Follow the “CBS Evening News” on Twitter HERE:
Follow the “CBS Evening News” on Google+ HERE:

Get your news on the go! Download CBS News mobile apps HERE:

Get new episodes of shows you love across devices the next day, stream local news live, and watch full seasons of CBS fan favorites anytime, anywhere with CBS All Access. Try it free!

The “CBS Evening News” premiered as a half-hour broadcast on Sept. 2, 1963. Check local listings for CBS Evening News broadcast times.