Updated at 6:20 p.m. ET
Donald Trump has parted ways with his campaign manager and close ally, Corey Lewandowski.
The move appears to be a reaction to the presumptive GOP nominee's sagging poll numbers and weeks of difficulty as he prepped for a tough general-election fight with Hillary Clinton.
Hours after his abrupt exit, Lewandowski gave a pair of television interviews in which he put a positive spin on his exit.