The BBC flagged dozens of sexualized images of children to the social network, but more than 80% were not removed, the news service notes.
But not only did 82 of 100 images stay up, the BBC says, but Facebook reported its journalists involved with the notification to the police, and canceled plans for an interview.
A BBC investigation last year pointed to "secret" groups used to meet on Facebook and swap images of children. The images newly reported to Facebook included images of children under 16 in sexualized poses, as well as groups with names such as "hot xxxx schoolgirls," the BBC notes.
Automated replies from Facebook said the 82 images did not breach "community standards."
In a later statement, Facebook said: "We have carefully reviewed the content referred to us and have now removed all items that were illegal or against our standards. This content is no longer on our platform. We take this matter extremely seriously and we continue to improve our reporting and take-down measures.
"When the BBC sent us such images we followed our industry's standard practice and reported them to Ceop [Child Exploitation & Online Protection Centre]."
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