Investigators have made/brought/leveled 'accusations' of corruption against a group of former officials.
There was a hint/tone of 'accusation' in his voice when he asked her where she had been.
He denied/rejected the 'accusation' that he had lied to the police.
(..) she wasn't doing it knowingly. Yes, she was cursed. It was Malfoy. That is a very serious accusation, Potter. Indeed. Your evidence? I just know. You "just" know. Once again, you're astonished (..)2009 Harry Potter and the Half-Blood Prince