More police officers will today patrol London’s streets amid a weekend of bloodshed in the capital.

A 17-year-old boy has died after being shot in south London and three others are injured following shootings in Wealdstone and Lewisham.

A 43-year-old man was stabbed following a dispute in Perivale, north-west London.

Two men, aged 22 and 27, and a 17-year-old boy suffered “life-changing” injuries after being attacked with a “noxious substance” in Hackney in the early hours of Bank Holiday Monday.

Rhyhiem Ainsworth Barton was gunned down in Kennington less than 24 hours before two other teenage boys - one aged just 13 - were shot in broad daylight in Wealdstone, Harrow.

The 17-year-old rapper and aspiring architect had "so much potential", his mother said as she tearfully told of her "handsome boy".

Pretana Morgan called for her son’s killing to be the last fatal shooting amid the 24-hour crime wave.

She said: "Let my son be the last and be an example to everyone. Just let it stop. What must be, must be."

She added: "It's not about race, it's not about nation, it's not about culture. Nothing. It's just a human race.

"Just one human race. So children, please let my son be the last."

She 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 on Saturday at just after 6pm.

Rhyhiem was found on nearby Warham Street with a gunshot injury.

Following the death, Labour MP David Lammy tweeted: "Enough. Enough. My heart goes out to families grieving children and teenagers. So many shattered lives, families and communities."

The Metropolitan Police said officers had not yet made any arrests in connection with the shooting and said there would be additional patrols in London on the bank holiday.

Detective Chief Superintendent Simon Messinger added officers were using search powers to seize knives and to stop cars carrying weapons.

In another episode of gun violence on Sunday, a 13-year-old boy suffered a shotgun pellet wound to the head within minutes of another teenager, aged 15, also being injured in a gun attack.

Both boys suffered head injuries in the incident in Wealdstone in Harrow and remain in hospital.

They are not thought to be in a life-threatening condition, a Scotland Yard spokeswoman said.

She added that they are investigating whether the incidents, at two locations in close proximity in High Street on Sunday, were linked.

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 on Sunday after a number of residents questioned a man driving 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.

DSC 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.”

Speaking about the murder of Rhyhiem he added: “Violence has no place on our streets. If you are carrying a weapon in Southwark linked to gang activity, you need to know that we can and will take action against you.”

Any witnesses to the killing should call 020 8721 4005, or anonymously via the independent charity Crimestoppers 0800 555 111.

Alternatively they can ring 101 quoting reference cad 6414/5May.