Mohammed’s release on Thursday came after a months-long pressure campaign from United States lawmakers and civil rights groups.

The teenager from Florida was 15 years old in February when he was arrested and taken from his family home in the town of al-Mazraa ash-Sharqiya, near Ramallah. He turned 16 while being held in Israeli jail, where he drastically lost weight and contracted a skin infection.

Last month, 27 US lawmakers joined a letter urging the Trump administration to push Israel to free him. Individual legislators, most prominently Democratic Senator Chris Van Hollen, have also been raising awareness for the case and demanding Mohammed’s release.