Protesters are taking to the streets in cities across the U.S. to demonstrate against the death of George Floyd in Minneapolis police custody. The white Minneapolis police officer who knelt on George Floyd's neck was arrested on murder charges Friday and accused in court papers of ignoring another officer's concerns about the handcuffed black man who died after pleading that he could not breathe. Derek Chauvin, 44, was charged with third-degree murder and second-degree manslaughter in the case, which sparked protests across the United States and fires and looting in Minneapolis. An attorney for Floyd’s family welcomed the arrest, but said he expected a more serious murder charge and wanted all the officers arrested. Hennepin County Attorney Mike Freeman said more charges were possible. He said the investigation into three other officers who were at the scene continues, but authorities “felt it appropriate to focus on the most dangerous perpetrator.” Chauvin allegedly disregarded the worries of the other officer, who wanted to roll Floyd onto his side, according to the criminal complaint. The papers also said that an autopsy revealed nothing to support strangulation as the cause of death. The exam concluded that the combined effects of being restrained, potential intoxicants in Floyd’s system and his underlying health issues, including heart disease, likely contributed to his death, according to the complaint. Floyd's family was seeking an independent autopsy. Police were trying to put Floyd in a squad car on suspicion of passing a counterfeit $20 bill when he stiffened up and fell to the ground, saying he was claustrophobic. Chauvin and officer Tou Thoa arrived to help and tried several times to get Floyd into the car, but he struggled, the complaint said. At one point, Chauvin pulled Floyd out of the passenger side of the car, and Floyd, who was handcuffed, went to the ground face down. Officer J.K. Kueng held Floyd's back and officer Thomas Lane held his legs, while Chauvin put his knee on Floyd's head and neck area, the complaint said. Lane asked, “Should we roll him on his side?” Chauvin said, “No, staying put is where we got him." Lane said he was “worried about excited delirium or whatever," and Chauvin said, “That's why we have him on his stomach," according to the complaint. After Floyd apparently stopped breathing, Lane again said that he wanted to roll Chauvin onto his side. Kueng checked for a wrist pulse and said he could not find one, the complaint said. In all, Chauvin had his knee on Floyd's neck for 8 minutes, 46 seconds, including nearly three minutes after Floyd stopped moving and talking, according to the complaint. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm QUICKTAKE ON SOCIAL: Follow QuickTake on Twitter: twitter.com/quicktake Like QuickTake on Facebook: facebook.com/quicktake Follow QuickTake on Instagram: instagram.com/quicktake Subscribe to our newsletter: https://bit.ly/2FJ0oQZ Email us at quicktakenews@gmail.com QuickTake by Bloomberg is a global news network delivering up-to-the-minute analysis on the biggest news, trends and ideas for a new generation of leaders.