WASHINGTON — David Sorensen, a White House speechwriter, resigned on Friday after a news report detailed accusations from a former wife who said he had abused her during their marriage.

His resignation came two days after Rob Porter, the White House staff secretary, submitted his own resignation after his two former wives publicly accused him of being abusive to them when they were married.

In an interview in The Washington Post, Mr. Sorensen’s former wife, Jessica Corbett, detailed a volatile two-and-a-half-year marriage in which Mr. Sorensen ran over her foot while driving a car and put out a lit cigarette on her hand. Their divorce became final last fall. Ms. Corbett said she described those episodes to the F.B.I. last fall as it was conducting a background check of Mr. Sorensen, according to The Post.

Mr. Sorensen denied Ms. Corbett’s account, and insisted that she was the abuser. Responding to a Facebook message on Friday evening, Mr. Sorensen called his former wife “creative” and later emailed a lengthy statement disputing her account. In the statement, he called her claims “malicious” and without “authentic evidence.” He also included photographs that he said were evidence of injuries she left him with during confrontations.