The tanks withdrew after Mr. Arafat promised to keep the guns silent.
Activist said tanks withdrew from Homs hours before the observers arrived.
In recent days as the tanks and artillery have withdrawn, access has improved, the monitors say.
The fifth tank withdrew and was abandoned at the camp of the 251 Battalion with mechanical problems.
The vehicle exploded, setting off its stowed ammunition, and the other tanks withdrew.
In those towns where Israeli tanks had withdrawn, they had not gone far, and could return in minutes.
Israeli tanks were withdrawing from the area before daybreak, residents said.
American reinforcements arrived in the morning, and the Italian tanks withdrew.
Four hundred meters off, the monstrous German tank was withdrawing, backing away with its frontal armor toward the field.
The other two tanks turn around and withdraw.