Controversial north shore prosecutor Julie Knight has left the 22nd Judicial District Attorney’s Office, a spokeswoman said Friday.

Knight, who handled felony prosecutions including several murder trials this year, resigned effective Friday, Lisa Page said.

The 22nd Judicial District includes St. Tammany and Washington parishes.

Knight was a felony prosecutor under former District Attorney Walter Reed but became the subject of negative publicity after a story surfaced in which Knight was alleged to have given a false statement to police regarding the serving of a summons in Bogalusa.

In that incident, process server Douglas Dendinger tried to serve a summons on former Bogalusa Police Officer Chad Cassard. Dendinger was later arrested after Knight and others present when he served the summons accused him of assaulting the officer.

But cellphone video of the incident appeared to show Dendinger simply handing the summons to the officer, who then turned and walked away.

In her statement to deputies, Knight said, “We could hear the slap as he hit Cassard’s chest with an envelope of papers. ... This was done in a manner to threaten and intimidate everyone involved.”

Knight was named as a defendant in a federal civil rights lawsuit filed by Dendinger, who was arrested in 2012 and booked on counts of simple battery, intimidation of a witness and obstruction of justice. Those charges were ultimately thrown out. The federal suit is ongoing.

Another assistant district attorney involved in the same incident, Leigh Ann Wall, has already left the DA’s Office.

Assistant District Attorney Jay Adair will take over Knight’s cases, DA Warren Montgomery said in a statement.

“I have complete confidence in him to perform in a highly ethical, highly professional and highly competent manner,” Montgomery said.

Follow Faimon A. Roberts III on Twitter, @faimon.