Two Florida men are in custody after they were both accused of making terroristic threats and allegedly planning a mass shooting.

On Monday, Isaiah Oglesby, 23, and James Thomas Goolsby, 25, were detained following scrutiny over their activity on social media. As detailed in a criminal complaint accessed by Tampa’s Fox station WVTV, the Pinellas County Sheriff’s Office received a tip regarding a possible mass shooting threat from the FBI. This alert was initiated by the girlfriend of one of the men, who reportedly found her boyfriend’s Instagram posts suspicious, according to the police.

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The affidavit states that federal authorities confirmed that the accounts belonged to Oglesby and Goolsby before reaching out to Pinellas County officials to continue the probe. A search warrant was issued by the sheriff’s office for access to the men’s social media profiles, where they reportedly uncovered several unsettling comments suggesting plans for a mass shooting.

According to a report by WTVT, the concerning conversations allegedly began with Oglesby asking Goolsby, “Wanna plan an attack?” He supposedly continued, “I’m radicalizing my son to never trust the government.” Oglesby is also alleged to have messaged Goolsby, “It better be a bloodbath of every corrupt politician on Capitol Hill,” and questioned, “So, when are we going to bomb the White House?”