A man was taken to hospital with a stab wound believed to have been self-inflicted.
Ambulance crews and police were called to Comyns Road, Dagenham at 6.15pm on Sunday to reports of a stabbing.
A 26-year-old man suffering from a stab wound was led to Goresbrook Park to a waiting air ambulance and flown to the Royal London Hospital in Whitechapel.
His condition was initially believed to be serious but later found to be “non-serious”.
A police spokesperson said: “An investigation has been launched into the circumstances surrounding this incident which at this early stage appears to be self-harm.
“An 18-year-old woman from Rainham assisted officers with enquiries but was released with no further action.”
No suspects are being sought in connection with the incident, the spokesperson added.
Resident Ken Makili was sitting in Goresbrook Park with his family when the air ambulance landed. “There were loads of people in the park when it arrived.
“Everyone was worried that someone had been seriously hurt in a car accident. Thankfully it wasn’t serious, though a lot of us thought it was strange that someone who could walk was taken by air ambulance.”
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