"Police are appealing for calm after a number of shots have been fired and petrol bombs thrown in the Creggan area of Derry… Following shots being fired tonight in Creggan, a 29 year old woman has been killed. We are treating this as a terrorist incident and we have launched a murder enquiry," the police wrote on Twitter late on Thursday.
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Meanwhile, media reported about violent riots in the area.
Local media reports and footage published on social media have shown police vehicles being attacked by masked rioters and hijacked cars being set on fire in the middle of the road.
Belfast Telegraph noted that the violence erupted amid police searches in Creggan.