Bob Lee was a former CTO at Square and most recently the CPO of cryptocurrency company MobileCoin|@crazybob|via Twitter

Bob Lee, the founder of multibillion-dollar tech company Cash App, was stabbed to death in San Francisco.

Police were informed of an attack early morning on Tuesday. They arrived at the scene and saw a man with life-threatening injuries. The San Francisco Police Department said in a statement the man succumbed to his injuries before reaching the hospital.

Lee was a former CTO at Square and most recently the CPO of cryptocurrency company MobileCoin.

San Francisco officials have been receiving backlash over their response to rising crime in recent years.

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