They were followed by local supporters of the Apprentice Boys, and the confrontation escalated.

At last the confrontation escalates into full out combat.

The partisan confrontation escalated over the committee's investigation of President Clinton's 1996 campaign fund-raising.

The confrontation swiftly escalates, leading to a cordon by the police.

A confrontation with police officers escalated into an armed standoff after group members refused to leave the building.

It would not be long before a confrontation that began as a dispute over access to shipping lanes escalated into a major regional conflict.

The confrontation escalated into violence when one man brandished a pistol and fired at the second group, hitting two men.

"She refused and the confrontation escalated to an assault," he said.

With the Americans gone, such confrontations may escalate.

The confrontation escalated when police began to push through the line of protesters and violence erupted.