HOUSTON ā A Houston police officer injured in a police helicopter crash that killed another officer was in serious condition Sunday at Memorial Hermann Texas Medical Center, according to spokesperson Natasha Barrett.
Chase Cormier, 35, was upgraded from critical condition following surgery after the early Saturday morning crash that police said caused fatal injuries to Officer Jason Knox, 35, the son of Houston City Council Member Mike Knox.
Six people were arrested in connection with gunfire in the area about an hour after the crash, according to Acevedo.
The Federal Aviation Administration and the National Transportation Safety Board are investigating the cause of the crash, along with a homicide investigation by Houston police.
More on the crash:Aerial footage shows aftermath of helicopter crash that killed Houston officer, critically injured anotherHouston police helicopter crashes.