A "force of nature" tech entrepreneur who based a multibillion-dollar funds service has been stabbed to dying.

Bob Lee, 43, was attacked in San Francisco on Tuesday morning native time and later died in hospital.

His father, Richard, stated he had "just lost my best friend" in a tribute on Facebook confirming the information.

"Bobby worked harder than anyone and was the smartest person I have ever known," he stated.

"He will be missed by all those that knew him. Thank you to those who have reached out in support."

Police had not named the sufferer and stated an investigation into the killing was ongoing, with no arrests made.

Sky News' US companion community NBC News reported that Bob and Richard Lee each lived in Miami, Florida, having grown nearer for the reason that dying of Bob's mom in 2019.

It was not clear why the sufferer was again in San Francisco.

What is Cash App?

Similar to PayPal, Cash App lets customers switch cash by a smartphone app.

The firm, which has been valued at $40bn (£32bn) by Forbes, says it is an alternative choice to conventional banking.

Parent firm Block stated it had greater than 50 million month-to-month energetic clients as of 31 December 2022.

Lee 'instrumental' on fintech scene

Lee was working as chief product officer at cryptocurrency agency MobileCoin when he died.

Founder Joshua Goldbard stated Lee was "a force of nature".

"He was made for the world that is being born right now, he was a child of dreams, and whatever he imagined, no matter how crazy, he made real," he added.

Lee was beforehand chief tech officer at Square, the fintech start-up co-founded by former Twitter boss Jack Dorsey, which later turned Block.

Dorsey known as Lee's dying "heartbreaking", hailing him as "instrumental" to Square and Cash App.

He additionally helped construct the Android cellular working system, in keeping with Lee's Twitter and LinkedIn pages.

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Musk: Crime 'horrific' in San Francisco

Lee additionally invested in a number of different science and tech corporations, together with Elon Musk's SpaceX.

Musk tweeted he was "very sorry" to listen to of Lee's dying.

"Many people I know have been severely assaulted," stated the billionaire.

"Violent crime in SF is horrific and even if attackers are caught, they are often released immediately."

The Tesla and Twitter proprietor didn't present any proof to again up his claims, however the California metropolis has seen a dozen murders for the reason that begin of 2023.

In the identical interval final yr, there have been 10.

Away from enterprise, Lee helped the World Health Organization (WHO) construct its COVID-19 app.

The WHO informed NBC News he provided "support and expertise" and "built a large part of the server" for the app.

Lee's ex-wife Krista Lee additionally paid tribute, describing him as "everyone's best friend".

They had two kids collectively, 17-year-old Damien and 14-year-old Scout.

Content Source: information.sky.com