Why is a Muslim man being locked up indefinitely in the US?

America, land of the incarcerated:

Today in New York City, the U.S. is torturing a Muslim detainee with no prior criminal record who has not even gone to trial.

For the last almost three years, Syed Fahad Hashmi has been kept in total pre-trial isolation inside in a small cell under 24 hour video and audio surveillance.…  He is forced to use the bathroom and shower in full view of the video.…  He has not seen the sun in years.…  He takes his meals alone in his cell. He cannot see any other detainees and he is not allowed to communicate in any way with any prisoners.…  He cannot write letters to friends and he cannot make calls to anyone but his lawyer.…  He is prohibited from participating in group prayer.…  He gets newspapers that are 30 days old with sections cut out by the government.…  One hour a day he is taken into another confined room where he is also kept in total isolation.