FILE PHOTO: Palestinian President Mahmoud Abbas walks inside the hospital in Ramallah, in the occupied West Bank May 21, 2018. Palestinian President Office (PPO)/Handout via REUTERS/File Photo

RAMALLAH, West Bank (Reuters) - Palestinian President Mahmoud Abbas was released from hospital on Monday after an eight-day stay and treatment for what officials said was a lung infection.

“Thank God I am leaving the hospital in good health and I will return to work tomorrow,” the 82-year-old leader, dressed in a suit and smiling, told reporters before walking out of the hospital in the city of Ramallah in the occupied West Bank.

Abbas, who is a heavy smoker, was admitted on May 20 for what doctors had initially said were medical tests following ear surgery. Officials later said he was being treated for pneumonia.

Abbas, who was also hospitalised for medical checks during a trip to address the U.N. Security Council in February, became president after the death in 2004 of Yasser Arafat.

The Western-backed president pursued U.S.-led peace talks with Israel but these broke down in 2014 and his democratic mandate expired eight years ago.

There has been no presidential election since 2005 and the term of office is only five years. His authority is essentially limited to the Israeli-occupied West Bank, with the Islamist group Hamas in control of the Gaza Strip.