Detectives have issued an urgent appeal to find "violent criminals" after two men were killed in a shooting.
Saydi Abu Sheikh, 23, and Zakariya Jeilani Mohamed, 32, died in what the police described as a "horrific act".
The two men, from Ilford, East London, died from gunshot wounds, the Metropolitan Police said.
Officers were called to the scene of the incident after midnight on Tuesday by London Ambulance Service to reports of a shooting inside a house in Henley Road.
Armed officers attended along with local officers and paramedics. Three men were found with gunshot injuries.
Despite the efforts of emergency services, the two men sadly died at the scene.
The families of both men were informed and continue to be supported by specially trained officers.
A 30-year-old man was taken to hospital with gunshot wounds and remains there in a life-threatening condition. His family are also being supported by officers.
Detectives from the Met's Specialist Crime Command are investigating and are currently following a number of lines of inquiry.
No arrests have been made and inquiries are ongoing, the Met Police said.
A car linked to the shooting was recovered nearby in Ronnie Lane.
DCI Wood added: "While information is vital at this point, please be aware that speculation, particularly on social media, is unhelpful."
Detective Chief Inspector Chris Wood, leading the investigation, said: "This was an unspeakable act of extreme violence that has devastated two families and sent shock waves throughout the community.
"My team is working around the clock to identify those responsible and I would like to express my thanks to the people who have already provided information – they can be sure that we will act on everything they have provided.
"We still want to hear from anyone who was inside or near the house in Henley Road when the attack took place.
"The suspects responsible for this horrific act are violent criminals and it is important that they are not protected by a wall of silence –help us take them off your streets by telling us who they are.
"It doesn’t matter if you speak to us directly or anonymously via Crimestoppers – but please do get in touch."
Sam Tarry, Labour MP for Ilford South, said the incident escalated during a house party.
"The police have not confirmed it was gang related, gang members may have been involved," he said.
"It was a house party, there was obviously people there with weapons, whatever happened, whether there was an altercation, that will come out in the investigation."
Mr Tarry said: "My view is, very strongly, we need more policing, we need more social workers, we need more youth service provision to tackle this, but we do need to deal with the wider economic crisis the country is facing.
"When young people think it is a better idea getting involved selling drugs or joining a gang than it is to get a well paid job, then that is actually something fundamentally wrong with society.
"When you can make quick money selling drugs that's obviously appealing to some people.
"We need better programmes to get people into decent employment, and show them this is not the way forward. You'll ruin your life and your family's life."
