Rob Porter, a White House staffer largely responsible for controlling the flow of information to President Trump, is resigning following allegations of domestic abuse.

Two ex-wives have accused Porter of physical abuse, with one telling news outlets of incidents years ago when Porter punched her in the face and choked her, while another spoke of emotional abuse and being grabbed and pulled from the shower.

Responding to the accusations in a statement read by White House press secretary Sarah Huckabee Sanders, Porter called them “outrageous” and “simply false.”

Sanders confirmed Porter’s resignation Wednesday, though she said he would not immediately leave his job in an effort to “ensure that there’s a smooth transition going forward.”

Porter served as the assistant to the president and White House staff secretary. He worked with chief of staff John Kelly on “trying to impose order” in a White House known for feuding staff and disorganization. Beginning after Kelly assumed his chief of staff role over the summer, he directed that all documents that Trump would see should be vetted by both him and Porter.