Following a "truly shocking" event in which a woman and two children were stabbed, a guy is still being held on suspicion of attempted murder.
At 5:35 p.m. on Friday, police were called to First Avenue, Dagenham, east London, where they discovered a lady in her 30s, an 8-year-old girl, and a 2-year-old boy.
All three are in hospital, though none of their injuries are thought to be life-threatening, the Metropolitan Police said.
A man, aged in his 40s, was arrested at the scene on suspicion of attempted murder.
He was also taken to hospital after becoming unwell and, after being assessed, was discharged into police custody.
Detective Superintendent Lewis Basford, responsible for policing in Barking and Dagenham, said: “This is a truly shocking attack and I want to thank local residents for their assistance and patience while we deal with this incident.
“At this early stage, we believe those involved were known to each other and we are not looking for anyone else in connection with this incident.
“A crime scene will remain in place for some time while our officers carry out vital work and you will see an increased policing presence in the area over the coming days.
“If you have any concerns or information that could assist police then please speak to an officer or call police on 101.”