LONDON, July 15 (Reuters) - Northern Irish police investigating the murder of journalist Lyra McKee said on Wednesday that they had arrested a 27-year-old man under the Terrorism Act.
McKee was killed in Londonderry last year, sparking outrage in the British province where a 1998 peace deal mostly ended three decades of sectarian violence that cost some 3,600 lives.
Northern Irish police said the man was being questioned at Musgrave police station in Belfast.
(Reporting by Guy Faulconbridge and Sarah Young; editing by Michael Holden)
