Detectives investigating the murder of 15-year-old Jordan Douherty in Romford have made a further arrest.
A 16-year-old male [D] was arrested this morning (Wednesday, 27 June) at an address in Newham on suspicion of murder - he remains in custody at an east London police station.
The investigation into Jordan's murder continues.
Police were called to a community centre in Clockhouse Lane, Romford, at 21:05hrs on Saturday, 23 June following reports of a large fight following a birthday party.
Early reports suggested that different groups were fighting and the centre was being damaged by youths.
Officers and London Ambulance Service (LAS) attended and were confronted by a large number of youths. Jordan was found suffering from stab wounds on the street outside the centre. He was treated at the scene by paramedics but was pronounced dead a short while later.
His next of kin have been informed.
A post mortem examination held at Queens Hospital on Monday, 25 June gave Jordan's cause of death as hypovolemic shock caused by a stab wound to the left ventricle of the heart.
Whilst formal identification has not yet taken place, the victim has been named by detectives as Jordan Douherty from Grays, Essex.
Detectives from the Homicide and Major Crime Command are investigating led by Detective Chief Inspector Larry Smith.
DCI Smith said: "We believe that this birthday party was advertised on social media, resulting in a large number of people attending. A number of people were escorted out of the community centre and this led to a fight breaking out and tragically Jordan receiving fatal injuries. A bus driver who was assaulted, received his injures as a result of refusing to take a number of party goers who wanted to leave the scene.
"Response team officers who attended the initial calls were confronted with up to 100 plus youths and I would like to directly appeal to those present to contact police about what they saw and heard to help my team build a clearer picture of what took place. Equally, if you have video footage or images of the violent aftermath to the party, we need to hear from you.
"We are also aware of reports circulating that Jordan was involved in 'drill music'. We are exploring all lines of enquiry to piece together what led to him losing his life, but there is no evidence at this stage that this was a motive."
Any witnesses or those who have information are requested to call the dedicated incident room number on 0208 345 3985 you can also call Crimestoppers anonymously on 0800 555 111 or online via https://crimestoppers-uk.org/give-information/forms/give-information-anonymously.
You can also tweet police via @MetCC.
Three other males - [A] 15, [B] 16 and [C] 17 - who were arrested at the scene on suspicion of murder have been released under investigation.
Chief Superintendent Jason Gwillim, Borough Commander East Area Command Unit said: "My thoughts are with Jordan's family and friends at this devastating time. Our homicide team are carrying out an investigation to catch the people responsible.
"This investigation will take time, there were a large number of people in attendance at this birthday party which sadly led to Jordan's life being cut short in the most tragic of circumstances.
"We are urging anyone who attended this party or was in the area at the time who can assist us to come forward and make contact with the incident room, or anonymously via the independent charity Crimestoppers. Alternatively they can ring 101 quoting reference CAD7737/23 June.
"The violence used has rightly caused concern, not only amongst the wider community, but the family and friends of the young people who were there.
"We are continuing to work with our partners and the local authority, and speaking regularly with community leaders to brief them on our response. Violence has no place on our streets and we will continue to use all the resources available to us to tackle anyone carrying a weapon."