BOULDER, Colo. (AP) _ A grand jury decided there was insufficient evidence to indict anyone in the JonBenet Ramsey slaying, ending a 13-month investigation into the case, District Attorney Alex Hunter announced Wednesday.

``The Boulder County grand jury has completed its work and will not return,'' Hunter said. ``No charges have been filed.

``I must report to you that I and my prosecutorial team believe we do not have sufficient evidence to warrent the filing of charges against anyone who has been investigated at this time.''

The 12 jurors, who have met for more than 13 months, left the Boulder County Justice Center without comment about two hours before Hunter issued a statement.

Hunter declined to answer questions and said he would meet with the news media Thursday.

The brutal crime set off a drawn-out, controversial search for her killer.

The prominence of the family _ the father the millionaire president of Access Graphics, the mother a former Miss West Virginia _ and the beauty of the little blond victim guaranteed worldwide attention for nearly three years.

It was before dawn on the day after Christmas in 1996 when Patsy Ramsey says she found a 2 1/2-page ransom note on the back staircase in the family's upscale home that demanded $118,000 for the safe return of JonBenet.