A 13-year-old boy shot in the head in London was an innocent bystander who had been walking down the street with his parents.
The youngster was hit by the shotgun pellets in Harrow as a 15-year-old was attacked at around 1.15pm on Sunday in High Street, Wealdstone.
Scotland Yard said the older boy was found to have suffered head injuries, caused by a number of shotgun pellets.
Minutes later, police were alerted to the second boy injured nearby.
Detective Chief Superintendent Simon Rose, Harrow borough commander, said: “It would appear that the first victim was approached by two male suspects, one in possession of a shotgun – and shots were fired, injuring him and an entirely innocent member of the public.
“This was a callous, reckless and brazen act, without any thought by those responsible for the fact that there were families with children and people in the High Street enjoying their weekend. This was quite simply appalling.”
Both teenagers suffered non-life threatening injuries, and the younger one has been released from hospital.
Officers have also been made aware of a possible third victim who may have been at the scene with the 15-year-old boy.
It is thought he sustained an arm injury and left prior to the arrival of the emergency services.
A 39-year-old man arrested on the evening of May 6 in connection with the incident has been released under investigation.
Extra police officers, supported by armed units, are patrolling the streets of London in a bid to combat the bank holiday violence.
Rhyhiem Ainsworth Barton was fatally gunned down in Southwark, less than a day before the Harrow shootings.
The 17-year-old rapper and aspiring architect had “so much potential”, his mother said as she tearfully told of her “handsome boy”.
Police have said extra patrols will be working on Bank Holiday Monday to keep the capital’s streets safe.
Detective Chief Superintendent Simon Messinger said: “The violence used has rightly caused concern and we are doing all we can to address this.
“Over the bank holiday weekend, additional officers are on the streets across the capital, working hard to keep London safe.
“They are using highly visible local patrols supported by armed response, traffic motorcycles, dog units and air support, alongside plain clothes intelligence-led operations.
“Violence has no place on our streets.”
Rhyhiem’s death is the latest in a spate of violent crimes in the capital, as police investigate more than 60 alleged murders so far this year.
Official statistics released in April showed the number of homicides in London had surged by 44% in the last year.
Mr Messinger said officers were using search powers to seize knives and to stop weapons being carried in cars.
Elsewhere, two men died in stabbings in Liverpool and Luton during the bank holiday weekend.
Following a Home Office post mortem, the victim of a fatal incident in Hanover Street #Liverpool yesterday has been formally identified as 20-year-old Fatah Warsame, from the Cardiff area. Anyone with info please contact @MerPolCC, 101 or @CrimestoppersUK. https://t.co/ENvjFoYNnL pic.twitter.com/psj29T2f2z— Merseyside Police (@MerseyPolice) May 7, 2018
Fatah Warsame, 20, from Cardiff, died after being stabbed in Liverpool city centre early on Sunday morning, while another victim, also aged 20, was killed in Bishopscote Road in Luton that evening.
Rhyhiem’s mother, Pretana Morgan, called for a stop to the violence.
She said: “Let my son be the last and be an example to everyone. Just let it stop. What must be, must be.”
Ms Morgan said her son was not in a gang and he had been “trying to make a difference” by learning to work with children.
Paramedics and police were called to reports of gunshots on Cooks Road in Kennington on Saturday at just after 6pm.
Rhyhiem was found on nearby Warham Street with a gunshot injury.
A 43-year-old was stabbed in Perivale, north-west London, on Sunday night after a dispute about driving.
Police said the man was attacked on Buckingham Avenue at around 9pm after a number of residents questioned a man in a blue car about the nature of his driving in the small residential street.
Meanwhile, three people were injured in a “noxious substance” assault following an altercation between two groups in east London at around 5.20am on Sunday.
Police are investigating whether the men, aged 22 and 27, and a 17-year-old boy suffered life-changing injuries in the incident, at Shacklewell Lane in Hackney.
Just before 6.30pm on Sunday, police were flagged down by a member of the public in New Cross Road, south east London, where a 22-year-old man was suffering from gunshot wounds.
The injured man was taken by ambulance to a central London hospital where his condition is not life-threatening, Scotland Yard said.
In a fourth Bank Holiday weekend shooting in the capital, a 30-year-old man – who may have been working as a delivery driver – was gunned down.
Police were called at 4.50pm on Monday to a shooting in John Williams Close, in New Cross, south east London, Scotland Yard said.
The victim was treated at the scene before being taken to hospital. His condition is not believed to be life-threatening.
Another shooting took place in Vale Street, Clayton, Greater Manchester Police said.
A man in his late teens was with his friends when he was shot in the leg shortly before 2.45pm on Monday.
He was taken to hospital for treatment of serious injuries.