A newspaper reporter in Massachusetts resigned on Friday after falsely claiming in a tweet that the gunman who opened fire on a newsroom in Maryland a day earlier was wearing a hat bearing President Trump's campaign slogan, "Make America Great Again."

Conor Berry, a reporter at The Republican in Springfield, Mass., said on Twitter that his journalism career "came to a screeching halt" after the tweet on Thursday, and offered an apology to fellow reporters and Trump supporters.