The medical examiner who performed an autopsy on George Floyd is expected to take the stand on Friday as the second week of Derek Chauvin’s murder trial comes to a close.

PBS News reports that the medical examiner who performed Floyd’s autopsy is expected to take the stand Friday, along with additional medical experts.

Floyd died in May after former Minneapolis police officer Chauvin pressed his knee on Floyd’s neck for several minutes, continuing even after Floyd appeared to have lost consciousness. Floyd, who was unarmed, was being arrested on suspicion of using a counterfeit bill at a grocery store.

As CrimeOnline previously reported, a word-renowned pulmonologist testified on Thursday that Floyd died due to lack of oxygen, and compared the effects of the pressure on Floyd’s body–he was chest-down to the pavement while Chauvin’s knee was pressed into his neck–to having one of his lungs surgically removed.

VIDEO: Pulmonologist says ‘healthy person’ would have died from what George Floyd was subjected to during arrest

“He’s using his fingers and his knuckles against the street to try to crank up the right side of his chest,” Dr. Martin Tobin testified, referring to the video of Floyd’s arrest. “This is his only way to try and get air to get into the right lung.”

Court proceedings are expected to resume at 9:15 CT/10:15 ET.