She also recounted how they both struggled with opioid addiction.

“Both Floyd and I, our story, it's a classic story of how many people get addicted to opioids. We both suffered from chronic pain. Mine was in my neck and his was in his back,” 45-year-old Courteney Ross said on Day Four of former Officer Derek Chauvin's murder trial.

''We both had prescriptions. But after prescriptions that were filled and we got addicted and tried really hard to break that addiction many times."

Prosecutors put Ross on the stand as part of an effort to humanize Floyd in front of the jury and portray him as more than a crime statistic, and also apparently explain his drug use to the jurors and perhaps get them to empathise with what he went through.

Chauvin, 45, is charged with murder and manslaughter, accused of killing Floyd by kneeling on the 46-year-old Black man's neck for 9 minutes, 29 seconds, as he lay face-down in handcuffs last May. The most serious charge against the now-fired white officer carries up to 40 years in prison.

The defence has argued that Chauvin did what he was trained to do and that Floyd's death was caused instead by Floyd's illegal drug use, underlying health conditions and the adrenaline flowing through his body.

An autopsy found fentanyl and methamphetamine in his system. Ross began by telling how the two of them met.

“May I tell the story?” she asked. “It's one of my favorite stories to tell.” Ross said she had gone to the shelter because her sons' father was staying there. She said she became upset because the father was not coming to the lobby to discuss their son's birthday. Floyd came over to check on her.

“Floyd has this great Southern voice, raspy. He was like, `Sis, you OK, sis?'” Ross recalled. “I was tired. We've been through so much, my sons and I, and (for) this kind person just to come up and say, Can I pray with you?' ...it was so sweet. At the time, I had lost a lot of faith in God.'' Minnesota is a rarity in explicitly permitting such “spark of life” testimony about a crime victim ahead of a verdict. Defence attorneys often complain that such testimony allows prosecutors to play on jurors' emotions. Ross described how both she and Floyd both struggled with an addiction to painkillers throughout their relationship.

She said they also took the prescriptions of others, as well as illegal drugs. In March 2020, Ross drove Floyd to the emergency room because he was in extreme stomach pain, and she later learned he overdosed.

”Addiction, in my opinion, is a lifelong struggle... It's not something that just kind of comes and goes. It's something I'll deal with forever,'' she said.

The testimony came a day after prosecutors played extensive video footage: Security-camera scene of people joking around inside a convenience store, and bystander and police bodycam video of officers pulling Floyd from his SUV at gunpoint and struggling to put him in a squad car before they put him on the ground. It also showed Floyd being loaded into an ambulance.

Floyd's struggle with three police officers trying to arrest him, seen on body-camera video, included Floyd's panicky cries of “I'm sorry, I'm sorry” and “I'm claustrophobic!” as the officers tried to push Floyd into the back of a police SUV.

At one point, Floyd bucks forward, throwing his upper body out of the car. Officers eventually give up, and Floyd thanks them — and then is taken to the ground, facedown and handcuffed. Chauvin knee pins his neck, another officer's knee holds his back and a third officer holds his legs, with the officers talking calmly about whether he might be on drugs.

“He wouldn't get out of the car. He just wasn't following instructions,” Officer Thomas Lane was recorded saying. Lane also asked twice if the officers should roll Floyd on his side, and later said he thinks Floyd is passing out. Another officer checked Floyd's wrist for a pulse and said he couldn't find one.

The officers' video was part of a mountain of footage and witness testimony Wednesday showing how Floyd's alleged attempt to pass a phony $20 bill at a neighborhood market escalated into tragedy.

When Floyd was finally taken away by paramedics, Charles McMillian, a 61-year-old bystander who recognized Chauvin from the neighborhood, told the officer he didn't respect what Chauvin had done.

“That's one person's opinion,'' Chauvin could be heard responding. ''We gotta control this guy 'cause he's a sizable guy... and it looks like he's probably on something.” Floyd was 6-foot-4 and 223 pounds, according to the autopsy. Chauvin's lawyer said the officer is 5-foot-9 and 140 pounds.

Floyd's death, along with the harrowing bystander video of him gasping for breath as onlookers yelled at Chauvin to get off him, triggered sometimes violent protests around the world and a reckoning over racism and police brutality across the US.

Events spun out of control earlier that day soon after Floyd allegedly handed a cashier at Cup Foods, 19-year-old Christopher Martin, a counterfeit bill for a pack of cigarettes.