One of the two men has life-changing injuries, Det Ch Supt James Conway said.
Addressing the girl’s condition, he told reporters: “We remain in close contact with our colleagues in the NHS who have worked around the clock to provide urgent care to the victims, including the young girl, who I’m very sad to say remains in a critical condition.”
He said specialist family liaison officers were supporting the girl’s family.
He also added: “We are specifically reaching out to our Turkish and Kurdish communities, particularly in north and east London, who I know are shocked and appalled by this crime.
“This is because the three men who were shot have connections to those communities.”
Giving details of the motorbike used in the attack, he said: “We know that the offender fired from a motorbike at approximately 9.20pm on Wednesday evening.
“The bike was a Ducati Monster with a white body, red chassis and red wheels.”
He said the motorbike had been stolen from a property in Wembley in 2021.
“At the time of the shooting, the bike was displaying the registration plate DP21 OXY,” he said.
“I want to hear from anyone who might recognise it – I’m particularly keen to hear from you if you saw it on the day of the incident.”
He added: “Gun crime has no place on the streets of London and this reckless act has left a young child fighting for her life.”
