The founder of multibillion-dollar tech company, Cash App, Bob Lee, has been confirmed dead after he was stabbed around San Francisco city centre in the United States.

The 43-year-old Cash App founder, who was stabbed on Tuesday, April 4, was later confirmed dead at the hospital.

His father, Rick Lee, confirmed his son – who was also the ex-chief technology officer at Square – had been killed.

Lee’s father, in a post on his Facebook page on Wednesday, said: “I just lost my best friend, my son Bob Lee when he lost his life on the street in San Francisco early Tuesday morning.”

Police officers were said to have responded to reports of the stabbing on Tuesday at about 02:35 local time (10:35 BST).

The San Francisco Standard viewed CCTV footage showed Lee walking down a deserted alleyway, seemingly looking for help.

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Lee was seen stumbling toward a parked car and lifting up his shirt to reveal his wound, but the vehicle drives off before the tech entrepreneur fell to the ground.

It was learned that the police operatives found the Cash APP founder unconscious in the Rincon Hill neighbourhood with two stab wounds to his chest, and started to administer aid before rushing him to the hospital.

Lee was living in Miami, Florida, but he was visiting San Francisco for a leadership summit and was staying on to see friends.

The Cash App founder’s brother, Tim Oliver Lee, also posted on Facebook, saying: “He really was the best of us. I was so fortunate to grow up with him, and I feel like I’ve lost part of myself.”

At the time of his death, Lee was the chief product officer of the cryptocurrency company, MobileCoin.

“He was a generous decent human being who didn’t deserve to be killed,” the CEO of Abra, a cryptocurrency company, Bill Barhydt, said on Twitter, noting that Lee also was a father.

Cash App is a smartphone-based payment app that allows person-to-person money transfers and is now worth $40 billion (£32 billion), according to Forbes.

Since launching in 2013, its user base has skyrocketed, hitting seven million monthly active users in 2017, and climbing to 30 million in 2020.

Tesla founder and Twitter chief executive, Elon Musk, while speaking on Lee’s death, said: “Violent crime in San Francisco is horrific and even if attackers are caught, they are often released immediately.”

San Francisco officials have been criticised for their response to a wave of violent crime in recent years.

The latest crime data suggests the city is one of the most-dangerous in the US.

Data from 2021 shows that residents there face a 1-in-16 chance each year of being a victim of property or violent crime, according to the Hoover Institution, a policy research think tank – making the city more dangerous than 98% of US cities.

Homicides have been a particular issue for San Francisco since the pandemic.

There were 56 homicides in the city in 2021 and 2022, and preliminary police data shows there have been 12 homicides in San Francisco so far this year.

San Francisco police have yet to identify a suspect in the killing of the Cash App founder, while no arrests have been made in the ongoing investigation.

San Francisco district attorney, Brooke Jenkins, in a tweet on Wednesday, said: “We do not tolerate these horrific acts of violence in San Francisco.”

The Star