In 2019, the perpetrators of the March Christchurch mosque shootings, the April Poway synagogue shooting, and the August El Paso shooting all used 8chan to disseminate their respective manifestos. The site was removed from the clearnet shortly after the August shooting due to suspensions of service from multiple providers, and did not return until November 2019. In August 2019, the United States House Committee on Homeland Security called Watkins to testify about 8chan's efforts to address "the proliferation of extremist content, including white supremacist content". The next month, Watkins traveled to Washington, D.C. for congressional questioning. The Philippines National Bureau of Investigation (NBI) and National Police (PNP) also launched investigations into Watkins and 8chan in August 2019 in relation to the shootings. , the NBI's investigation was closed and their findings were turned over to the PNP; the PNP's investigation was still open but had not resulted in charges against Watkins.