The official Twitter account for the Alameda County Sheriff’s Office retweeted a posting from alt-right founder and white nationalist Richard Spencer on Monday.

The retweet is a video of a press conference Spencer held earlier in the day, in which he panned assertions that President Donald Trump was disavowing a white supremacist rally that turned deadly on Saturday. During that press conference, Spencer called Trump’s comments “kumbaya nonsense,” and said “only a dumb person would take those lines seriously.”

The Alameda County Sheriff’s Twitter account responded to a reporter who asked why the department was retweeting Spencer. The account replied, “That was an accidental retweet and was in no way done intentionally,” but the retweet was not immediately deleted.

A follow-up tweet read: “We are working to take this accidental retweet down. It is not showing up in our feed for is is [sic] to delete.” The posting was finally deleted around midnight local time.

The department was not immediately available when contacted by phone.