KANSAS CITY, Mo. — FBI agents searched a Kansas landfill today in connection with the disappearance of a 10-month-old Missouri girl, whose parents claim was snatched from her crib three days ago.

Agents and Kansas City police were searching the Deffenbaugh Industries landfill in the suburb of Shawnee, FBI spokeswoman Bridget Patton said. She declined to discuss details, citing the ongoing investigation.

She said it was the second time the agency had been at the landfill, which investigators also searched Tuesday, the same day Lisa Irwin was reported missing.

“That’s not uncommon. We have searched several areas more than once. They are just going out there making sure they are completely thorough,” Patton said.

Investigators wrapped up a few hours later.

The search came just hours after Lisa’s mother, Deborah Bradley, told The Associated Press that police told her she failed a lie-detector test and accused her of being involved in her baby’s disappearance.

Bradley said police never showed her the results of the test and denied knowing anything about what happened to her daughter.

Bradley and the baby’s father, Jeremy Irwin, said Lisa was abducted sometime after her mother checked on her late Monday night and when her father returned home from work early Tuesday morning.