Three males arrested in connection with the murder of a convicted criminal in north Belfast have been released without charge.
Two men, aged 30 and 33, and a 17-year-old boy had been questioned by detectives investigating the murder of 36-year-old Dublin man Robbie Lawlor in the Ardoyne area on Saturday.
A 27-year-old man who had also been detained was released on Monday.
The victim was shot dead at a house in Etna Drive shortly before noon on Saturday.
Lawlor had previously been linked with the murder of teenager Keane Mulready Woods in Co Louth in January.