1.   The leak appeared to have been fixed, but it will be checked later this week with a full load of fuel.

2.   Authorities initially said a gas leak appeared to have caused the blast, then backed away from a specific theory while still asserting it did not appear suspicious.

3.   But leaks first appeared in the Israeli newspapers on Wednesday.

4.   Leaks appeared Wednesday in Israeli newspapers.

5.   The first leaks appeared Wednesday in Israeli newspapers.

6.   The leak appeared to be caused by a defect in the heater.