Witnesses say alleged Charleston shooter Dylann Roof spent as much as an hour inside the Emanuel AME Church before opening fire Wednesday night. Now, CNN reports, there’s video from inside the church, showing someone who looks like Roof sitting with the group moments before the massacre began.

The video was apparently taken by one of the victims, 26-year-old Tywanza Sanders, and posted to the Snapchat app with the caption, “Bible study knowledge planter.”

The person believed to be Roof can be seen sitting on the extreme right of the photo, wearing a gray sweatshirt. According to CNN, a friend of Sanders spotted the video and sent a screenshot to the network.

Mashable also obtained video of the upload in question:

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