In a seemingly random attack earlier this week, a black man reportedly stabbed a white man in Aurora, Colorado, screaming “black lives matter” as he did so. He has since been charged not only with attempted murder, but also with committing a hate crime.

Steve Sinclair, 30, has been accused of stabbing 29-year-old Michael Conner in the torso on Tuesday evening. The arrest report says that Sinclair was raving and screamed “black lives matter” before stabbing Conner, who was rushed to the hospital with a collapsed lung afterwards, according to KUSA-TV.

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Witnesses said that it was not clear what spurred the attack. They added that they saw Sinclair approach Conner and say, “I’m going to kill you and your dog.” Conner then attempted to run away and defended himself with a stick before he was stabbed.

The first police officer who arrived on the scene said that Sinclair continued saying “black lives matter” over and over again as he was arrested. The officer revealed that Sinclair had his hands up and said “I stabbed him, I’m a psychopath,” refused to sit down, and “insisted” that officers should shoot him. He was then arrested without further incident.

Conner has been left with serious injuries, and his family says that he will not be able to work for at least six weeks as he recovers. They have set up a GoFundMe campaign to help pay for his medical expenses.

“Hello we are raising money for Michael Conner and family,” the GFM page states. “Michael was stabbed Tuesday night while walking his dog in his apartment complex. A man jumped over his patio and attacked him. Michael has a 5 month son and is a the main household provider. He cannot work the next 6 weeks due to a surgery and collapsed lung. We are raising money for medical bills and his future doctor visits. Anything would be greatly appreciated!”