The Israeli army imposed a total blockade late Tuesday on the Gaza Strip and the West Bank, because of celebrations to mark independence of the Jewish state, a military spokesman said.
The spokesman said in a statement that the blockade, which took effect Tuesday night, would be lifted Friday at 2:00 am (2300 GMT).
The blockade, imposed on the Palestinian territories when the intifada, or uprising, erupted on September 28, had been eased a little.
But because of the celebrations, the territories will be sealed off completely, the spokesman said.
He added that Palestinian workers would not be allowed to cross into Israel and that crossing points -- including the Allenby Bridge between the West Bank and Jordan, and Rafah between the Gaza Strip and Egypt -- would be closed.
The day of remembrance is commemorated from Tuesday night to Wednesday to honour the memory of Israeli soldiers killed in combat and will be followed by celebrations marking the 53rd anniversary of Israel's independence.