The Jamie McMahon murder trial was halted on Tuesday and the jury has been discharged.
Mark Lewis, aged 19, of Clickers Drive, Upton, Northampton, and Michael Francis, aged 33, of St James Road, Northampton, were both on trial charged with murdering the 26-year-old in St Giles Churchyard, St Giles Street, in the early hours of October 2 last year.
However, after the first day of evidence, the trial was halted on Tuesday morning.
Following a two-and-a-half hour delay, the jury was brought back into court and told the trial could not proceed any further.
Judge Rupert Mayo discharged the jury shortly after 2pm after telling them he had made the decision the case could “not go any further”.
Judge Mayo said: “I discharge you from reaching a verdict in this case. As far as you are concerned, this case is now finished.”
Judge Mayo has listed the case for mention on June 20.