Four people have appeared at Luton crown court over the murder of David Molloy in Hemel Hempstead.
Police and paramedics were called to an address in Saturn Way in the early hours of Tuesday, March 13 following reports of a stabbing.
Mr Molloy, 24, was found injured at the property and, despite being treated, died at the scene.
On Monday, May 14 Mohammed Tariq Khalid, of no fixed address, appeared via a video link from the prison where he is being held and pleaded not guilty to murdering Mr Molloy.
In the dock Matthew Eyles, 44, of no fixed address, Emma Payne, 40, of Eight Acres, Tring and Paul Smith, 48, of Maylands Avenue, Hemel Hempstead all pleaded not guilty to a charge of assisting an offender.
Mr Smith pleaded not guilty to a further charge of doing an act intending or intended to pervert to course of public justice.
Mr Kkalid was remanded in custody to await his trial which is fixed for August.
Mr Eyles, Miss Payne and Mr Smith were all granted bail.
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