1.   Extra police were called to quell the disturbances.

2.   Extra police were called to quell the disturbance.

3.   Extra police were called to quell the disturbance when, without provocation, Williamson punched Mr Coulthard.

4.   Pendleton was called to quell the disturbance, he said.

5.   Troops were called to quell the protest.

6.   Five people died in January, when the military was called to quell protests.

7.   The announcement followed a meeting that had been called to quell violence in eastern Congo.

8.   They remained there while match referee Peter van der Merwe and Sri Lankan cricket officials were called to quell the situation.