1.   Edouard was in the car, on the far side of the square, when he heard the explosion.

2.   Fishermen reported hearing the explosion and bits of debris were washed up for months afterwards.

3.   I remember hearing the explosion from my back door.

4.   I started to circle the smoke and flames below us when we heard explosions.

5.   Loud explosions were heard as far away as Lucerne and the canton of Uri.

6.   Marie was reading in bed when she heard the explosion.

7.   The powerful explosion was heard from Portland, Maine to Albany, New York.

8.   These witnesses had heard an explosion and seen a column of smoke rise from behind a range of hills in Soviet territory.

9.   The alarm was raised by a neighbour who spotted the fire on Saturday evening, then heard an explosion.

10.   And five explosions were heard in the southern Serbian town of Nis.