Forensic investigators at the scene of a car bomb blast on Bishop Street in Londonderry, Northern Ireland, Sunday, Jan. 20, 2019. Northern Ireland police and politicians have condemned a “reckless” car bombing outside a courthouse in the city of Londonderry. The device was placed inside a hijacked delivery vehicle and exploded Saturday night as police, who had received a warning, were evacuating the area. There were no reports of injuries. (Niall Carson/PA via AP)
LONDON — Army bomb-disposal experts in Northern Ireland carried out a controlled explosion on a hijacked vehicle Monday amid heightened tensions in Londonderry following a weekend explosion outside a courthouse.