Crime scene investigators continued searching after dark Saturday inside and outside the home of missing 10-month-old Lisa Irwin, and her parents sat down with detectives Saturday for the first time since Thursday.
But Capt. Steve Young, a police spokesman, said that after looking into the best of 250 tips, police could report no breaks in the case.
"Unfortunately, none of them have led to anything good," he said.
Detectives met with Lisa's parents, Deborah Bradley and Jeremy Irwin, late Saturday afternoon, a development Young said was crucial.
"It's the best thing for everybody in trying to find this child," Young said. "We couldn't be happier about it."
The couple also consented to additional searches at the house, he said.
Police said Thursday that the couple weren't cooperating. The next day the parents told national morning television shows that they had been cooperating but that Irwin had asked for a break in questioning.
Just before 6 p.m. Saturday, investigators used metal detectors to scan the front and back yards of the home in the 3600 block of North Lister Avenue. Police continued their search through the evening, including calling for a fire department ladder so they could check the house's gutters and roof vents.
Police crime scene tape was no longer around the property. Two small signs in the front yard included handwritten messages: "Bring Lisa home" and "Find Lisa." Yellow ribbons were tied on a flag pole in the front yard and trees.
Irwin returned from work as an electrician about 4 a.m. Tuesday and found that Lisa was gone. Police launched a massive search and questioned the couple closely about their activities that morning and the previous day.
Mike LeRette, Bradley's cousin and a spokesman for the family, told the Kansas City Star that family members had planned to scale back their media interviews for the time being and focus on generating tips for police.
LeRette sought to ease any apparent tensions that may have existed between Bradley, father Jeremy Irwin and police. The family is not unhappy with the police investigation and continues to pass along its leads and ideas, LeRette said, adding that Irwin spoke with police and the FBI a couple of times Friday.
"We don't get any feedback, but we're not dissatisfied," LeRette said. "We're in the dark like everyone else."
LeRette said lawyers are now working with the family to set up a trust fund for donations for a reward fund.
Family members sense that the volume of tips to authorities has fallen off in the last couple of days and they hope a generous reward fund will encourage more tips.
"It seems like they're running out of good leads, so why not give them more?" LeRette asked. "We're one phone call away. One person calls in and maybe she's in our arms later today."
Investigators first ran metal detectors around the family's Northland yard Friday, and FBI agents searched a landfill for the second time for trash from the neighborhood.
Young said Saturday that the landfill search turned up nothing significant and was done as a precaution.