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Matters were brought to a head by a serious incident.

So far this season, there have been no serious incidents.

A number of less serious incidents have also made news.

It's probably the most serious incident we've had in the last 6 months to a year.

Between 30 and 50 individuals were thought to be involved in the most serious incidents.

"Any serious incident is reported to me within 24 hours."

But they were able to pick their way across without serious incident.

But now law and order rules, with no serious incidents of violence reported last year.

The first serious incident of this nature was in 1903.

They covered a total of 12,000 miles without serious incident.