Donald Trump's campaign chairman is out.
The Republican nominee emailed the news to his supporters Friday morning saying, "This morning Paul Manafort offered, and I accepted, his resignation from the campaign."
He continued, "Paul is a true professional and I wish him the greatest success."
Manafort's resignation could be another sign that the Trump campaign is struggling. Earlier this week, his camp announced major staff changes, triggering a lot of speculation.
Manafort has made headlines of his own this week, specifically for his actions while working for a Ukrainian politician.
On Wednesday, Trump announced Breitbart News executive chairman Stephen Bannon would take over as his new campaign chief executive, a title very similar to Manafort's.
But Manafort released a statement that same day writing, "I remain the campaign chairman and chief strategist, providing the big-picture, long-range campaign vision."
As of Friday morning, Manafort hadn't commented on his resignation.