challenged

Police said Vance Luther Boelter was armed at the time of his arrest in a rural area west of Minneapolis, but gave himself up peacefully when challenged.

The plan by the infrastructure minister is being challenged in the courts.

Three experts who spoke to BBC Verify suggested that the disaster may have occurred as the aircraft's flaps were not extended during take-off - though other pilots and analysts have challenged this.

At a City Council hearing Tuesday, he sparred with city leaders who challenged the department’s relationship with federal authorities.

Some of these policies are currently being challenged in court.