RAMALLAH (Ma'an) -- Prisoner Hana Shalabi vowed to continue her hunger strike on Wednesday as an Israeli military judge postponed a decision in her appeal, Addameer prisoners organization said.

The judge said he would make a decision on Shalabi's appeal against her administrative detention on Sunday or Monday.

Shalabi has been on hunger strike for 21 days since she was detained from her home in the northern West Bank. She was sentenced to six months but the term was later reduced to four months. She has not been charged or tried for any offense.

Addameer's lawyer Mahmoud Hassan said the 29-year-old appeared weak in court and was handled roughly by soldiers.

Over 300 Palestinians are held in administrative detention in Israeli prisons under procedures that allow Israel to detain Palestinians for renewable terms of six months without pressing charges, using laws dating back to the British Mandate period.