Journalist murder in Londonderry 'a horrendous act'
The murder of a journalist in Londonderry was "a horrendous act", the PSNI's Assistant Chief Constable Mark Hamilton has said.
Lyra McKee, 29, was shot during rioting after police searches in the city's Creggan area on Thursday night.
Mr Hamilton said the murder is being treated as "a terrorist incident".
Read more: Journalist shot dead during Derry trouble