Fabian Kacica death: Third arrest in stabbing murder probe
A third person has been arrested on suspicion of murder after a 19-year-old was stabbed to death.
Fabian Kacica, from Southend, died after what police described as a "disturbance" near the Central Library and university campus in the town at about 21:00 BST on Monday.
A 20-year-old from Southend was arrested on Wednesday in connection with the death.
Two teenagers are also in custody after their arrest on suspicion of murder.
The 18-year-old man from Leigh-on-Sea and a boy, 17, from Shoeburyness, were arrested on Tuesday.
A post-mortem examination found the cause of death of Mr Kacica was a "stab wound".
Det Ch Insp Daniel Stoten said: "There has been speculation around the motive behind this attack and I would like to stress that it remains unclear at this stage.
"We are continuing to keep an open mind about the motive and would continue to urge people to come forward if they have information that can assist our investigation."
Meanwhile, a march against knife crime involving about 100 people took place on Tuesday.
Southend rapper Sonny Green said: "The whole town has been saddened by the stabbing. We did march on Tuesday to encourage more love and more peace.
"I do feel safe [in Southend]. I am not losing hope in our community. I think things are getting worse but we can make it better. It's up to us."
Police are asking witnesses and anyone in the area of The Forum between 20:00 and 21:00 or anyone with CCTV or dash cam footage to contact them.
Beverly Williams, chief executive of the company that runs Mr Kacica's former school, said: "We are extremely shocked and saddened to hear this tragic news about Fabian Kacica, who was a pupil at Cecil Jones until 2015.
"Our thoughts are with his family and friends."