Palestinian Authority Prime Minister Salam Fayyad was hospitalized with abdominal pain.
Fayyad, who is also acting finance minister, was taken to the hospital Monday evening from his office in Ramallah. He was kept overnight in a local hospital for observation.
An anonymous source told the Associated Press that Fayyad has an infected pancreas.
It is believed Fayyad wants to replace Mahmoud Abbas as president of the Palestinian Authority.