(updated 57 minutes ago)

Lemon was in L.A. to cover the Grammy Awards and was arrested after 11 p.m. local time in a hotel lobby in Beverly Hills.

He was arrested by a team of agents from Homeland Security Investigations and the FBI, according to a law enforcement source familiar with the operation. His case is being led by HSI.

“Don has been a journalist for 30 years, and his constitutionally protected work in Minneapolis was no different than what he has always done,” Lemon’s attorney, Abbe Lowell, said in a statement Friday morning. “The First Amendment exists to protect journalists whose role it is to shine light on the truth and hold those in power accountable.”

The former CNN anchor Don Lemon and three other people have been arrested on charges that they violated federal law during a protest at a church in St. Paul, Minn., this month, lawyers and Justice Department officials said on Friday, reviving a case that was rejected last week by a magistrate judge.

The arrests of Mr. Lemon, a second journalist and two protesters came a little more than a week after three other demonstrators who took part in the action at the Cities Church on Jan. 18 were taken into custody.