By June 1992 the situation had escalated to an open military engagement.

"But as fans quickly became involved, the situation escalated," he said.

Although he tried to prevent violence, the situation escalated beyond his control.

The situation escalated with one person dead and many injured.

Now the situation has escalated and four people have been killed.

The situation in both countries has escalated during the past two months.

Now the situation has escalated further with a dramatic turn of events.

The situation escalated into a major incident, and in this case the man probably didn't mean anything.

In the second half of the century, the situation escalated.

The situation escalated further on the weekend of 10 April 2010.