1.   Authorities described the bomb as a butane gas cylinder hooked to a firing device.

2.   For example, it specifies that Palestinian butane gas cylinders must be a different color than Israeli ones.

3.   The bomb was a butane gas cylinder hooked to a firing device, they said.

4.   This year, the government has banned cooking in tents and butane gas cylinders will not be allowed inside Mecca.

5.   Several butane gas cylinders were disarmed by civilian defense squads before exploding, the official added.