1.   Rebels use cooking gas canisters packed with explosives as mortar rounds, which are not accurate.

2.   Rebels use cooking gas canisters packed with explosives as mortar rounds, which have poor accuracy and often miss their intended targets.

3.   Gas canisters packed with nuts, bolts and nails have been used in the other bombings and attempts.

4.   Gas canisters packed with nails and hex nuts have been the signature devices used in the other bombings and attempts.

5.   Rebels use cooking gas canisters packed with explosives as mortar rounds, which are not very accurate.

6.   That attack and others were staged with gas canisters packed with nuts, bolts and nails.

7.   There have been eight other bombings or attempted bombings since, all involving gas canisters packed with nuts, bolts and nails.

8.   They also used gas canisters packed with nails, nuts, bolts and gunpowder.