DHAKA, Nov. 8 (Xinhua) -- Former Bangladeshi Prime Minister Khaleda Zia was shifted back to jail on Thursday after a month of treatment.

Prison authorities on Thursday morning transferred the wheelchair-bound Khaleda Zia to the Old Dhaka jailhouse where she also appeared before a court in a graft case.

Brigadier General Abdullah Al Harun, director of Bangabandhu Sheikh Mujib Medical University (BSMMU), told journalists that she was released from the hospital as the medical board formed for her treatment gave her discharge certificate.

He said that her physical condition is now stable.

Khaleda Zia was admitted to the hospital in Dhaka on Oct. 6 for treatment following a court directive.

Khaleda Zia, also chairperson of the Bangladesh Nationalist Party (BNP), was then taken to the BSMMU from Dhaka Old Central Jail.

She has been in jail since February after a court sentenced her over the alleged embezzlement of foreign funds.

BNP has been demanding upcoming parliament polls be held under a non-party government and release of Khaleda Zia ahead of the elections slated for December.