https://apnews.com/fa25b8ec26fd4fac82ae411a05f21f5d

LONDON (AP) — Facebook says none of the 200 or so people who watched live video of the New Zealand mosque shooting flagged it to moderators, underlining the challenge tech companies face in policing violent or disturbing content in real time.

The social media giant released new details about its response to the video in a blog post. It said the gunman's live 17-minute broadcast was viewed fewer than 200 times and the first user report didn't come in until 12 minutes after it ended. Fifty people were killed at two mosques in Christchurch.