A teenage boy of 15-year-old has been arrested alongside three people in connection with the Derry riot which ended the life of journalist, Lyra McKee.
Ms McKee was shot while watching the disturbances in the Creggan area of Derry on 18 April.
READ ALSO: JOURNALIST KILLED DURING RIOT IN DERRY
Dissident republican group, the New IRA, claimed responsibility saying its members carried out the killing.
The police have in custody four males, aged 15, 18, 38 and 51 who were arrested in Derry on Thursday morning.
They were arrested under terrorism legislation and are being questioned by detectives at Musgrave Station in Belfast.
The senior detective leading the investigation, PSNI Detective Superintendent Jason Murphy, said: “As part of this morning’s operation detectives carried out searches at four houses in the city and arrested four people in connection with the violence which was orchestrated on the streets of Creggan on the evening of Lyra McKee’s murder.
“They are currently in custody where they are being questioned,” he added.