Cash App founder and tech executive Bob Lee was fatally stabbed in San Francisco, the city's police department has said.
The San Francisco Police Department said officers responded to a report of a stabbing at 2.35am on Tuesday and found Mr Lee suffering from apparent stab wounds.
He was transported to a local hospital, but died as a result of his injuries.
No arrests have yet been made.
“There is no place for this kind of violent crime against anyone in our city,” San Francisco Police Chief William Scott said in a statement on Wednesday night.
Chief Scott said the investigation is still in its early stages and the department will not speculate “on the circumstances surrounding this horrific crime”.
Mr Lee was fatally stabbed in the Rincon Hill neighbourhood, near Google's headquarters and the stadium for Major League Baseball team the San Francisco Giants.
Mr Lee was the chief product officer of the cryptocurrency company MobileCoin.
MobileCoin chief executive Josh Goldard remembered Mr Lee as a “child of dreams”.
“He was made for the world that is being born right now,” Mr Goldard said in a statement.
“From large contributions to Android at Google, to being the first CTO of Square, in that time creating CashApp, and working with us here at MobileCoin, Bob surely had an impact that will last far beyond his short time on earth.”
San Francisco has seen a rise in crime as it continues to recover from the Covid-19 pandemic. Police data shows the city has recorded 12 homicides this year, slightly up from 10 recorded this time in 2022.
San Francisco Mayor London Breed called Mr Lee's fatal stabbing a “horrible tragedy”. Ms Bree said she is confident anyone responsible for the fatal stabbing would be held accountable.
The Associated Press contributed to this report
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Country-size land deals
US interest in purchasing territory is not as outlandish as it sounds. Here's a look at some big land transactions between nations:
Louisiana Purchase
If Donald Trump is one who aims to broker "a deal of the century", then this was the "deal of the 19th Century". In 1803, the US nearly doubled in size when it bought 2,140,000 square kilometres from France for $15 million.
Florida Purchase Treaty
The US courted Spain for Florida for years. Spain eventually realised its burden in holding on to the territory and in 1819 effectively ceded it to America in a wider border treaty.
Alaska purchase
America's spending spree continued in 1867 when it acquired 1,518,800 km2 of Alaskan land from Russia for $7.2m. Critics panned the government for buying "useless land".
The Philippines
At the end of the Spanish-American War, a provision in the 1898 Treaty of Paris saw Spain surrender the Philippines for a payment of $20 million.
US Virgin Islands
It's not like a US president has never reached a deal with Denmark before. In 1917 the US purchased the Danish West Indies for $25m and renamed them the US Virgin Islands.
Gwadar
The most recent sovereign land purchase was in 1958 when Pakistan bought the southwestern port of Gwadar from Oman for 5.5bn Pakistan rupees.
Israel Palestine on Swedish TV 1958-1989
Director: Goran Hugo Olsson
Rating: 5/5
The Equaliser 2
Director Antoine Fuqua
Starring: Denzel Washington, Bill Pullman, Melissa Leo, Ashton Sanders
Three stars
Brief scores:
Pakistan (1st innings) 181: Babar 71; Olivier 6-37
South Africa (1st innings) 223: Bavuma 53; Amir 4-62
Pakistan (2nd innings) 190: Masood 65, Imam 57; Olivier 5-59