A spokesperson from Facebook said that they are not showing web search results as they are focusing on letting users find posts from within Facebook. The spokesperson also mentioned that the social media firm is still collaborating with the Redmond company only in "different areas."
One feature still powered by Bing is Facebook's translation option, where users can translate other users' post should it be in another native language.
In addition, Facebook will gradually implement its own internal search tool today, according to Reuters.
According to Facebook CEO Mark Zuckerberg, there were over 1 billion searches made on Facebook in July and that there are over a trillion posts by users. Zuckerberg noted that the figures are larger "than any Web search corpus out there."
Meanwhile, a Microsoft spokesperson said that the dumping of the Bing search engine from Facebook did not happen just now as the social media network changed its search feature to help users find what has been shared throughout the network "versus a broader set of web results."
"We continue to partner with Facebook in many different areas," the spokesperson added.
It remains to be seen whether Facebook's move will affect the Microsoft search engine.
According to American Internet analytics firm Comscore, Bing is at number two with around 20 percent worth of market share among other search engine competitors, compared with the number one search engine Google with its 67 percent worth of market share.
The Menlo Park-based social media firm also halted its use of banner ads from Microsoft since 2010, resulting in more ad revenue for the former.
As of October 28, the total number of daily active users from Facebook reached more than 860 million, with 152 million of which coming from the United States and Canada.