In light of the apparent execution of American photojournalist James Foley, Twitter has bee hard at work removing accounts that have been spreading the alleged beheading imagery around the network.

Foley, an freelance journalist, disappeared in Syria in November of 2012. Late Tuesday night, a video found its way online appearing to show Foley, 40, beheaded by militant group ISIS.

Here’s what Twitter CEO Dick Costolo had to say:

We have been and are actively suspending accounts as we discover them related to this graphic imagery. Thank you https://t.co/jaYQBKVbBF

— dick costolo (@dickc) August 20, 2014

Twitter also announced that it would now remove images of the dead upon request from the family, as long as the images don’t provide some public interest or newsworthiness.