Margulis-Ohnuma asked , referring to the length of the investigation . NEW : New York City Officer Luis Tejada pleads not guilty to robbery , drug charges . He is accused of leading a gang that robbed drug dealers of cash , inventory . He had committed more than 100 robberies since 2001 , officials say .
NEW : New York City Officer Luis Tejada pleads not guilty to robbery , drug charges . He is accused of leading a gang that robbed drug dealers of cash , inventory . He had committed more than 100 robberies since 2001 , officials say .