Krissana Kewchingduang, 30, who was sent to the hospital for stomach treatment, snatched a Honda motorcycle from Sarinthorn Chuannok, 29, who was parking at a pharmacy where she worked on Wednesday.
The pharmacy is located in front of the hospital.
The inmate was jailed for drug distribution at Thonburi Remand Prison in Bangkok’s Bangbon district.
As of Thursday afternoon, he is still at large.
Meanwhile, a Samut Sakhon court issued an arrest warrant for Krissana.