31.   Police said they suspect a gas leak had caused the explosion, but investigation into the exact cause continued.

32.   Police suspected a gas leak caused the explosion.

33.   The ITAR-Tass news agency said a fuel leak caused the blast.

34.   The leak caused a small fire which was quickly put out.

35.   The leak caused no danger to the surrounding area, fire officials said.

36.   The ongoing mission is to focus on chemical pollutants, damage caused by leaks and vapors released when factories and other sites were bombed.

37.   This mission is to focus on chemical pollutants, damage caused by leaks and vapors released when factories and other sites were bombed.

38.   Initial investigation showed a fuel tank leak caused the explosion and the fire, he told AFP.

39.   An earlier leak in August caused a ban on fishing in lagoon, which is the main food source for local residents.

40.   An oil leak may have caused that crash, Navy officials said.