A 29-year-old journalist has died after shots were fired in Londonderry, with police in Northern Ireland treating the death as a "terrorist incident".

Dissident republican group the New IRA was probably responsible for the shooting, police have said.

Lyra McKee was shot in the head in what police are treating as a "terrorist incident", amid disturbances in Londonderry on Thursday evening, and died later in hospital.

Police Service of Northern Ireland officers were carrying out a search operation in the Creggan area of Derry aimed at disrupting dissident republicans ahead of this weekend's commemoration of Irish independence, when a situation developed during which more than 50 petrol bombs were thrown at officers and two cars were hijacked and set on fire.

During the unrest a gunman fired a number of shots at police, Assistant Chief Constable Mark Hamilton said.

He said: "Lyra McKee, 29 years old, was wounded. She was taken away in a police Land Rover to Altnagelvin Hospital but unfortunately she has died there.

"We have now launched a murder inquiry here in the city.

"We believe this to be a terrorist act, we believe it has been carried out by violent dissident republicans, our assessment at this time is that the New IRA are most likely to be the ones behind this and that forms our primary line of inquiry.

"This is a horrendous act, it is unnecessary, it is uncalled for, it is totally unjustified."