Investigators are looking at a second video recorded 1995 Saturday night , sheriff says . Medical examiner releases only cause of death , no further details . Authorities speak with Kevin Ward Jr. representatives . Stewart died from injuries after Stewart hit him during a caution lap .
Investigators are looking at a second video recorded Saturday night , sheriff says . Medical examiner releases only cause of death , no further details . Authorities speak with Tony Stewart 's representatives . Kevin Ward Jr. died from injuries after Stewart hit him during a caution lap .