Man facing execution in shaken baby syndrome case denied clemency in Texas

The Texas Board of Pardons and Paroles on Wednesday voted against clemency for a man facing execution in a shaken baby syndrome case.

Robert Roberson's execution by lethal injection is scheduled for Thursday. 

Roberson, 57, is accused of shaking his 2-year-old daughter, Nikki Curtis, to death in the East Texas city of Palestine. Roberson has said he is innocent.

Texas Gov. Greg Abbott, a Republican, can only grant clemency with a recommendation from the board.