Imagine a case of an unjustified arrest. Say that a person is arrested in retaliation for doing something that is not a crime. The arresting authority announces what the person was arrested for, just as if it were an actual crime, but the conduct described is not actually illegal. No formal charges have yet been filed, so there is no accusation of having broken a particular law.
A news organization reports that the person was arrested, and what they were arrested for allegedly doing. They use "allegedly" in all the proper places to avoid claiming that the person actually did what they are accused of, but they don't mention that the alleged activity would not, in fact, have been illegal. (Suppose that this is something that any lawyer could have told them, but which might not be obvious to a layperson.) The reporting overall gives the impression that the person has been accused by the authorities of an action that is illegal, when this is not the case. This could plausibly harm a person's reputation.
Has the news organization defamed the arrestee by giving the impression that they were accused of a crime, when they were not? Have they done it in a legally-actionable way?
This is a hypothetical situation; I'm interested in answers for any US state.