Police have received more than 100 tips since a "48 Hours Investigates" piece on the Elizabeth Smart kidnapping aired Friday on CBS.
Investigators are following up on the leads but haven't found the missing puzzle piece that will help them solve the 7-month-old abduction, Salt Lake City police detective Dwayne Baird said.
"They're following up on all of them," Baird said. "There are a few that warrant some real research, but we're looking for the lead that brings Elizabeth home."
Since the kidnapping, police have received more than 16,000 leads in the case.
Smart was kidnapped from her bedroom in the early morning hours of June 5, 2002, while her then 9-year-old sister Mary Katherine Smart watched. Friday's television piece was the first time reporters had been allowed to interview Mary Katherine. The show also recounted the twists and turns in the Smart case, including the sudden death of former Smart handyman Richard Ricci and the possible way the kidnapper entered the Smart house.