This combination of pictures created on April 17, 2019, shows at left a police file photo of John Walker Lindh and a February 11, 2002 photograph of him from the records of the Arabia Hassani Kalan Surani Bannu madrassa in Pakistan's northwestern city of Bannu. Picture: TARIQ MAHMOOD / AFP
This combination of pictures created on April 17, 2019, shows at left a police file photo of John Walker Lindh and a February 11, 2002 photograph of him from the records of the Arabia Hassani Kalan Surani Bannu madrassa in Pakistan's northwestern city of Bannu. Picture: TARIQ MAHMOOD / AFP

John Walker Lindh, the American captured in Afghanistan in 2001 fighting for the Taliban, was released early from federal prison on Thursday, the Washington Post reported, citing Lindh’s lawyer.

Lindh, who was 20 years old when he was captured, left prison in Terre Haute, Indiana, on probation after serving 17 years of a 20-year sentence, the newspaper said.

Now 38, Lindh is among dozens of prisoners to be released over the next few years after being captured in Iraq and Afghanistan and convicted of terrorism-related crimes following the attacks on the US by al-Qaeda on September 11 2001.

His release brought objections from elected officials who asked why Lindh was being freed early and what training parole officers had to spot radicalisation and recidivism among former jihadists.

US secretary of state Mike Pompeo called Lindh’s release “unexplainable and unconscionable”.

“There’s something deeply troubling and wrong about it,” he said on Fox News on Thursday morning.

Leaked US government documents published by Foreign Policy magazine show the federal government as recently as 2016 described Lindh as holding “extremist views”.

“What is the current interagency policy, strategy and process for ensuring that terrorist/extremist offenders successfully reintegrate into society?” asked US senators Richard Shelby and Margaret Hassan in a letter to the Federal Bureau of Prisons.

Lindh’s parents, Marilyn Walker and Frank Lindh, did not respond to requests for comment and Lindh’s lawyer, Bill Cummings, declined to comment.

Melissa Kimberley, a spokesperson for the prison in Terre Haute, could not immediately be reached for confirmation of the Post’s report.

US-born Lindh converted from Catholicism to Islam as a teenager. At his 2002 sentencing, he said he travelled to Yemen to learn Arabic and then to Pakistan to study Islam.

He said he volunteered as a soldier with the Taliban, the radical Sunni Muslim group that ruled most of Afghanistan from 1996 to 2001, to help fellow Muslims in their struggle or “jihad.” He said he had no intention “to fight against the US” and never understood jihad to mean anti-Americanism.

Lindh told the court he condemned “terrorism on every level” and attacks by al-Qaeda leader Osama bin Laden were “completely against Islam”.

But a January 2017 report by the US government’s national counterterrorism centre, published by Foreign Policy, said that, as of May 2016, Lindh “continued to advocate for global jihad and to write and translate violent extremist texts”.

NBC News reported that Lindh wrote a letter to its Los Angeles station KNBC in 2015 expressing support for Islamic State, saying the Islamic militant group was fulfilling “a religious obligation to establish a caliphate through armed struggle”.

Additional reporting by Jonathan Allen

Reuters