Meta issued an apology Wednesday night after an “error” caused Instagram’s recommendation algorithm to flood users’ Reels feeds with disturbing and violent videos, some depicting fatal shootings and horrific accidents.

The issue affected a broad range of users, including minors.

The troubling content, which was recommended to users without their consent, featured graphic depictions of individuals being shot, run over by vehicles and suffering gruesome injuries.

While some videos carried “sensitive content” warnings, others were displayed with no restrictions.