"Rather than peacefully protesting, these defendants are charged with a crime that put lives at risk," U.S. Attorney Ryan K. Patrick said.

HARRIS COUNTY, Texas — The Greenpeace protesters arrested after suspending themselves from the Fred Hartman Bridge Thursday will also face federal charges.

22 activists are charges with aiding and abetting obstruction of navigable waters, U.S. Attorney Ryan K. Patrick announced Friday.

All 31 individuals accused in the stunt that blocked the bridge and shut down part of the Houston Ship Channel were already charged with obstructing critical infrastructure, a felony, and criminal trespass and obstructing a highway, a misdemeanor.

The Harris County Sheriff’s released the names and mugshots of 25 people in custody, including all eleven who were hanging from the bridge. They have warrants out for six others. Those accused all bonded out of jail.

“I commend the Harris County Sheriff’s Office for their professionalism,” said Patrick. “This was a unique situation that required hours of preparation and execution to bring to a close. Rather than peacefully protesting, these defendants are charged with a crime that put lives at risk."

If convicted of the federal charges, each faces up to a year in federal prison and a possible $2,500 fine, Patrick said.

The protesters, from 13 states and the District of Columbia, have been identified as:

Mary F Zeiser

Sarah Francis Newman

Cole Taylor Martin

Tyler N McFarland

Shavone Torres

Dakota Paige Schee

Jonathan Butler

Chelcee Price

Piper Werle

Jayden Chayanne Allen

Sydney Lae Cliffard not in custody to-be-warrant

Ryan Harris

Zeph Fishlyn

Heidi Nybroten

Christian d Bufford

Heather Glasgow Doyle

Amanda Lee

Mariah De Los Santos

Stephanie Hillman

Brianna Latrell Gibson

Graham Evan Clumpner not in custody to-be-warrant

Daniel James Rudie not in custody to-be-warrant

Mitchell Wenkus not in custody to-be-warrant

Tamura Russel Seiji

David Lynn Mcnew not in custody to-be-warrant

Tracye Redd

Richard Alex Sisney

Julie Ann McElvain

David A Rappelet not in custody to-be-warrant

Irene Kim

Michael Anthony Hebert

Thursday evening, Houston and Baytown firefighters and HPD SWAT team members rappelled down to the protesters and lowered them to boats waiting below.

If convicted of the misdemeanor charges, each faces up to a year in federal prison and a possible $2,500 fine.

HCSO led the investigation and arrests with the participation and assistance of Harris County Precinct 8 Constables’ Office, U.S. Coast Guard, Houston Police Department, FBI, Texas Department of Transportation, Federal Aviation Administration and fire departments in Houston and Baytown.

The protesters were then taken ashore in handcuffs, accompanied by a deputy. Some had been hanging from the bridge for nearly 12 hours.

The activists could also face charges for a three-vehicle crash on the bridge after a van carrying the protesters partially blocked a lane, according to Precinct 8. One person was hurt.

The Houston Ship Channel reopened around 5 a.m. Friday according to the U.S. Coast Guard.

The protesters were aiming to block traffic in the ship channel. They originally said they would stay for 24 hours.