Responding to reports that Facebook Inc (NASDAQ:FB) monitors users’ emotions and provides the data to advertisers, the social networking giant said it is not possible to target people based on their emotional state.

According to a report from The Australian via CNBC, Facebook shared a research report with an advertiser – a top bank – related to tools it uses to “gain useful psychological insights on young Australian and New Zealanders in high school and tertiary education.”

The research report reveals that Facebook uses “the covert tools” to classify people’s posts on its platform as stressed, anxious, nervous “or other negative emotions.

But Facebook said that it mistakenly sent an internal research report to the advertiser. The social media company said that advertisers cannot target its 2 billion users based on their emotional state, USA Today reported.

The 23-page report, prepared by the social media company’s Australian executives David Fernandez and Andy Sinn, shows how the social media company detect when its users are feeling emotions.

In a statement to the newspaper, Facebook Inc (NASDAQ:FB) said:

“We have a process in place to review the type of research we perform and in this case that process was not followed.”

The social networking company also rejected claims that it has any secret “tools to target people based on their emotional state.”

“The analysis done by an Australian researcher was intended to help marketers understand how people express themselves on Facebook. It was never used to target ads and was based on data that was anonymous and aggregated,” the company added.

In other news, Facebook CEO Mark Zuckerberg announced that the social media company will hire 3,000 people to find and remove problematic content from its social networking platform.

Meanwhile, shares of Facebook Inc (NASDAQ:FB) were down -0.84% on Wednesday. The company’s stock is up more than 30% for the year.