Chief Palestinian negotiator Saeb Erekat speaks to reporters in Ramallah, in the Israeli-occupied West Bank, on July 1, 2019. (Mohamad Torokman/Reuters)

JERUSALEM — Saeb Erekat, a top Palestinian leader who tested positive for the novel coronavirus this month, was placed on a ventilator Monday and is in critical condition at an Israeli hospital, the facility said in a statement.

Erekat, well known to diplomats as the Palestinians’ chief negotiator and the leader most frequently quoted by Western media, was rushed from his West Bank home to a hospital in Tel Aviv on Sunday, then transferred to Jerusalem’s Hadassah Ein Kerem Medical Center.