1.   The street erupted in a huge explosion, with secondary explosions in the adjoining buildings.

2.   Secondary explosions were reported, and great billows of smoke continued to drift into the clear blue sky.

3.   Secondary explosions illuminated the night sky like fireworks as grenades and other munitions burst from the fiery wreckage on the ground.

4.   The bombs destroyed at least one site and caused secondary explosions at another, an indication that ammunition or other firepower was in the vicinity, the officials said.

5.   There is general agreement that the center fuel tank, which was nearly empty, may have caused a secondary explosion.

6.   There was a concern at first about a secondary explosion, Kemp said, so firefighters and officers had to move quickly to get people to safety.

7.   They said a smaller secondary explosion probably occurred shortly afterwards.

8.   Police warned people to stay away from the burning buildings because of possible secondary explosions, according to Beta.

9.   A major mystery is whether some unexplained event set off the vapor, or whether an explosive device set off a chain reaction that led to a secondary explosion.

10.   A large blast rocked Pristina Monday evening when a controlled detonation of unexploded ordinance apparently set off a secondary explosion.