WikiLeaks’s founder Julian Assange is facing a court hearing over a U.S. request to extradite him for alleged computer hacking.

Assange is expected to appear by video link from prison for Thursday’s hearing at London’s Westminster Magistrates’ Court.

The 47-year-old Australian is serving a 50-week prison sentence for jumping bail in 2012 and holing up in the Ecuadorian Embassy in London. At the time, he was facing extradition to Sweden for questioning over alleged sex crimes.

Kristinn Hrafnsson, Editor-in-chief of WikiLeaks and barrister Jennifer Robinson, are backdropped by an image of Assange as they address the media at Southwark Crown court in London, Wednesday, May 1, 2019.  WikiLeaks founder Julian Assange has been jailed for 50 weeks for breaching his bail after going into hiding in the Ecuadorian embassy in London. (AP Photo/Frank Augstein)
Kristinn Hrafnsson, editor-in-chief of WikiLeaks and barrister Jennifer Robinson, are backdropped by an image of Julian Assange as they address the media at Southwark Crown court in London, May 1, 2019. (Frank Augstein/AP Photo)

Assange was arrested last month after Ecuador revoked his political asylum.

Lawyers say Assange will fight extradition to the U.S., where authorities have charged him with conspiring to break into a Pentagon computer system.

WikiLeaks editor-in-chief Kristinn Hrafnsson said Wednesday that the extradition battle was “a question of life and death” for Assange.

Protesters outside court as Julian Assange will appear to be sentenced on charges of jumping British bail seven years ago, in London, Wednesday May 1, 2019. Founder of WikiLeaks whistleblower website, Assange faces a separate court hearing later, on a U.S. extradition request, after being arrested at the Ecuadorian embassy April 11, when his political asylum was withdrawn.(AP Photo/Matt Dunham)
Protesters outside the court on May 1, 2019, where Julian Assange will appear to be sentenced on charges of jumping British bail seven years ago. Founder of WikiLeaks whistleblower website, Assange faces a separate court hearing later, on a U.S. extradition request, after being arrested at the Ecuadorian Embassy April 11, 2019, when his political asylum was withdrawn.(Matt Dunham/AP Photo)
Protesters outside court as Julian Assange will appear to be sentenced on charges of jumping British bail seven years ago, in London, Wednesday May 1, 2019. Founder of WikiLeaks whistleblower website, Assange faces a separate court hearing on a U.S. extradition request, after being arrested at the Ecuadorian embassy April 11, when his political asylum was withdrawn.(AP Photo/Matt Dunham)
Protesters outside court, on May 1, 2019, where Julian Assange will appear to be sentenced on charges of jumping British bail seven years ago, in London. (Matt Dunham/AP Photo)