Bryan Colangelo has resigned as the Philadelphia 76ers’ president of basketball operations, the team confirmed on Thursday.

Colangelo’s decision comes after allegations last month that he used anonymous Twitter accounts to attack his own players, his predecessor and, strikingly, to defend his dress sense.

“It has become clear Bryan’s relationship with our team and his ability to lead the 76ers moving forward has been compromised,” said a statement from 76ers managing partner Josh Harris. “Recognizing the detrimental impact this matter had on the organization, Colangelo offered his resignation. We find the situation to be disappointing for our entire organization. We are determined to continue the tremendous progress we have made over the last two seasons in our quest to win an NBA Championship.”

The statement did not say whether the 76ers had found Colangelo guilty of any wrongdoing but confirmed that law firm Paul, Weiss, Rifkind, Wharton & Garrison had looked into the matter.

The story was originally reported by The Ringer, which found several accounts that could be plausibly linked to Colangelo. Some of the tweets attacked Colangelo’s own players. Particularly damaging were ones that criticized Joel Embiid, one of the young stars the Sixers hope to build their team around. “Too bad that Embiid danced like a fool and the whole disaster happened, next time he will think twice before mocking his team,” said one tweet after Embiid had gone to a Meek Mill concert. Another asked “Why didn’t you tell docs knees hurt before Houston?” Another defended the size of Colangelo’s collars. “That is a normal collar. Move on, find a new slant,” said @Enoughunkownso1, one of the accounts linked to Colangelo after another user had questioned his dress sense.

Colangelo admitted that he had used one of the accounts “to keep up with the news” but denied setting up the others. ESPN reports that Colangelo told the 76ers that his wife may have been responsible for the accounts.

The NBA commissioner, Adam Silver, would not be drawn on the matter on Thursday. “The notion here was, let’s find out what’s going on,” Silver said. “You have to separate sort of the chatter and sort of what either fans or, frankly, the media are saying from the facts. And the first thing we have to do here is determine what the actual facts are in this circumstance.”