"While Google Search will always be there with the most useful results we can provide, sometimes the reliable information you're searching for just isn't online yet," Google said.

"This can be particularly true for breaking news or emerging topics, when the information that's published first may not be the most reliable."

The company said it has trained its search algorithms to spot when a topic is rapidly evolving and a range of sources haven't weighed in yet.

"We'll now show a notice indicating that it may be best to check back later when more information from a wider range of sources might be available," Google added.