All four men who were arrested as as part of the investigation into the murder of James McConnell have been released from police custody.
Two men, aged 19 and 23, were arrested in the Limavady area of the city yesterday and were released without charge this afternoon.
Two other men, aged 24 and 53, were released on bail earlier today.
38-year-old Mr McConnell was shot dead by two masked men at his home at Woodlands Avenue, Prehen in Derry, on 11 February.
