He was detained and searched. One man asked him if he had any weapons; he did not. They drove him to the federal courthouse and placed him in a holding cell. Two officers eventually returned to read his Miranda rights and ask if he would waive those rights to answer a few questions; he did not.

And almost as suddenly as they had grabbed him off the street, the men let him go.

Pettibone said he still does not know who arrested him or whether what happened to him legally qualifies as an arrest. The federal officers who snatched him off the street as he was walking home from a peaceful protest did not tell him why he had been detained or provide him any record of an arrest, he told The Post. As far as he knows, he has not been charged with any crimes.

His detention, which was first reported by Oregon Public Broadcasting, and videos of similar actions by federal officials driving around Portland in unmarked cars have raised alarm bells for many. Legal scholars questioned whether the detentions pass constitutional muster.