Tinder, Bumble and other dating apps are using images captured from inside the Capitol siege and other evidence to identify and ban rioters’ accounts, causing immediate consequences for those who participated as police move toward making hundreds of arrests.

Women and men have in some cases also turned the dating apps into hunting grounds, striking up conversations with rioters, gathering potentially incriminating photos or confessions, then relaying them to the FBI. Using the dating apps to pursue members of the mob has become a viral pursuit, with tips shared on Twitter and some women changing their location on the dating apps to Washington, D.C., in hopes of ensnaring a potential suspect.

The moves cast a spotlight on how some unlikely sources have helped expand a digital dragnet for participants in a siege with deeply online roots, fueled by viral conspiracy theories, organized on social media and live-streamed in real-time.