George Floyd, the man who died after a Minneapolis police officer held his knee against his neck for approximately five minutes Monday evening, had a close relationship with former NBA player Stephen Jackson. 

Floyd and Jackson uncannily resembled each other to the point that they developed a relationship, according to Jackson, who posted a video on Instagram Tuesday morning saying they called each other "Twin." 

"This is what I gotta wake up to, huh?" Jackson said, shaken by the news of Floyd's death. "This is what I gotta wake up to. Floyd was my brother, man. We called each other 'Twin,' bruh. Everybody know me and Floyd called each other 'Twin,'" he said. 

"My brother was only out there in Minnesota, he was changing his life, he went to Minnesota, he was driving trucks. I just sent him two, three boxes of clothes. My boy was doing what he was supposed to do, man, and y'all go kill my brother, man. I'm on my way to Minnesota, man. Whatever I can do, can't let this ride, dog. Y'all not going to be mad until it hits you front door. Bull---t."

Video from the incident outside Cup Foods at the intersection of Chicago Ave. and 38th St. in south Minneapolis shows Floyd being placed in handcuffs, with separate video later showing him facedown on the street next to a Minneapolis police squad vehicle, with an officer holding him down with his knee pressed against his neck and Floyd saying, "I can't breathe." 

Other video from the incident shows three officers holding Floyd down at one point. 

The four officers, who were responded to a report of a "forgery in progress," were fired Tuesday, with Minneapolis Mayor Jacob Frey calling it the "right thing to do." 

Floyd's tragic death sparked protests in Minneapolis Tuesday, with the situation escalating Tuesday night to the point that police deployed what was believed to be tear gas while shooting rubber bullets and marking rounds into the crowds of protestors, some of whom who can be seen in video breaking out police vehicle windows with bottles and other objects.  

Related: Chaotic scenes in Minneapolis as protestors clash with police

Jackson, who averaged 15.1 points in 17 NBA seasons, posted numerous times about Floyd on Instagram, noting that they both grew up in Houston, where Floyd was a good football and basketball player who was now in Minnesota turning his life around. 

"Where we from not many make it out but my Twin was happy I did. I’m gonna continue to make u proud fam. It makes me so angry that after all the things u been through when u get to your best self that they take u out like this," wrote Jackson. 

The FBI and the Minnesota Bureau of Criminal Apprehension are investigating the incident.