The journalist was shot dead while observing rioting in Derry in April 2019.
Police in Northern Ireland have made three further arrests as part of an investigation into the murder of Lyra McKee.
The men, aged 36, 39 and 45 were arrested in Derry City and are being held in Musgrave Police Station in Belfast for questioning.
A 63-year-old man was arrested yesterday in relation to the journalist's murder, who was shot dead while observing a riot in Creggan in 2019.
Detectives have made three further arrests. pic.twitter.com/7mo5YWsHUz— Police Service NI (@PoliceServiceNI) October 5, 2021