An autopsy arranged by the US family of George Floyd shows he was suffocated by a policeman, rather than dying from pre-existing heart problems as claimed by the official ruling, their lawyer announced Monday. "Independent medical examiners who conducted an autopsy of Floyd Sunday determined that asphyxiation from sustained pressure was the cause of death," Ben Crump said. The killing of unarmed African American Floyd at the hands of police in Minneapolis last Monday has spearked six nights of furious nationwide demonstrations against police brutality and racism. pmh/ft