A British resident of Orihuela Costa was killed in the early hours of Saturday morning after apparently being attacked with a broken bottle in Villamartín Plaza.
Scott Waring, 40, died almost instantly from several wounds that were inflicted to the chest and neck.
The circumstances of the attack, which took place at about 2am, are under investigation by the Guardia Civil.
A witness to the aftermath of the attack said he and a few other people had tried to stop the bleeding and called the emergency services but Mr Waring was already dead by the time police arrived.
Soon after, local police arrested three Britons, two men aged 43 and 26 and a woman aged 39, who were in a car that was reportedly being driven with no lights on not far from the scene of the crime.
Another British man, who works in the plaza, was taken in for questioning in connection with the incident on Saturday and held over the weekend.
Finally a fourth Briton, aged 29 and suspected to be the one who carried out the attack, fled the scene but handed himself in to a Guardia Civil station in the north of the Costa Blanca on Sunday.
Sources close to the investigation told COSTA DAILY that the first four people arrested were all released on Monday but it is not yet clear what charges any of them may face.
Mr Waring leaves behind a young daughter and his family left flowers at the plaza in remembrance of this doting father.