Number of Facebook users across the globe were locked out of their accounts due to an error in the system, triggering a security threat among those affected, a report said on Saturday.

According to the report in Mashable, Facebook was quick to assure that the problem was a technical one and there was no security problems.

"An error in one of our systems designed to help prevent suspicious account access sent a small set of people to our account recovery flow unnecessarily," a Facebook spokesperson was quoted as saying.

"We have fixed the issue and are in the process of clearing the affected accounts from this recovery flow," it added.

However, it could not be verified how many accounts were affected due to the snag on Friday.