Two men are due to appear at Lisburn Magistrates court later today charged in connection with the murder of Marc Williamson in Portadown on Sunday.
Mr Williamson (21) from the Richhill area of Portadown, was stabbed in the town's Hartfield Avenue.
A 26-year-old man has been charged with murder and a 24-year-old has been charged with assisting offenders and intimidation.