No more than a week later the third major incident occurred.

Police officials said they did not believe any such incident occurred.

About a week and a half before, a similar incident occurred.

One other incident occurred at the end of this summer.

All these incidents had occurred in the last two months.

All the incidents occurred on the west side of the city.

These incidents, more 1973 than 2003, have all occurred in the past four months.

A major incident occurred at 4.30pm on 13 June 1969.

This is the first time such an incident has occurred to us.

How often do I read in the paper that one or other incident has occurred.