A Washington, D.C., man charged last week with selling methamphetamine to an undercover police officer allegedly had a strong support for ISIS, according to prosecutors who opposed bail for the defendant.

According to court documents, Jeremy Stevenson first came under FBI scrutiny on Jan. 19, 2017, after he had donned a mask and taunting patrons at a Washington, D.C., bar by displaying ISIS propaganda from his cell phone, including photographs of the ISIS flag and a video depicting a beheading at the hands of an ISIS militant. The incident occurred during the week of the presidential inauguration, and the FBI identified Stevenson as the perpetrator later that year.

The FBI spoke with Stevenson twice in 2017. According to court documents, the suspect defended ISIS beheadings during these interviews, comparing such acts to death sentences handed down by the U.S. criminal justice system.

Read more: NBC Washington