A news article (assuming no photo is used) is the description of an event. News agencies quickly send their journalists/reporters to the scene to write about the event.
If a news outlet re-writes the story based on what was reported by others, how can the original journalists claim copyright infringement?
In claims of copyright infringement of writing materials, the topic is usually the basis of the claim. For example, it is easy to claim that a novel has been re-written by someone else based on the story and characters. In the case of news articles, everyone can claim had the same observation as long as the wording is not similar.