1.   Almost every night, young men detonate gas cylinder bombs and start small fires.

2.   It has pledged to scale back its recruiting of children and its use of gas cylinder bombs, but there is no evidence it has done either.

3.   The rebels used propane gas cylinder bombs and grenades in the attack, the locals said.

4.   The rebels used propane gas cylinder bombs and rifle-launched grenades in the attack, the locals said.