10/10/2011 02:28 pm ET | Updated Dec 10, 2011

Lisa Irwin Missing: Police Recreate Abduction At Missouri Home

Law enforcement officers investigating the week-old unsolved disappearance of 10-month-old infant Lisa Irwin staged a "break-in" at the family's home on Sunday, with several detectives entering the residence through a window that may have been a route of entry for an abductor.

Camera crews camped out at the home in suburban Kansas City, Mo., filmed several detectives climbing through the window, located in the front of the one-story home. The investigators appeared to struggle to enter the home quietly, with a screen clanging down loudly as they clambered through the opening.

Police have said the front window showed signs of tampering and may have provided a point of access to the home for a kidnapper. The recreation of a possible entry through the window appeared to be an attempt to test that theory.

A police spokesman declined to comment on conclusions investigators may have drawn from the test. "For reasons that are obvious, we can't comment on the specifics of the case," Capt. Steve Young of the Kansas City Police Department told HuffPost.

"What the cameras saw speaks for itself," Young said.

More than 250 tips have poured in from the public regarding the possible whereabouts of the missing infant, but none have proven useful to police, who say they still have no leads as to the identity of a possible kidnapper.

Lisa's parents, however, continue to face heavy police scrutiny, and on Sunday, investigators carted away several additional boxes of evidence from the house. Last week, her mother, Deborah Bradley, said police had accused her of being responsible for the child's disappearance and informed her that she had failed a lie detector test.

Young declined to comment on whether or not Bradley failed a polygraph test, but said that police currently have no official suspects in the disappearance.

He said the parents are again cooperating with police, after earlier reports -- denied by family members -- that they had refused to submit to further interviews. "The family's back at the table, and we're thankful for that," Young said. "That's clearly the best thing for this investigation. They need to be here."

Criminal justice statistics suggest that the most likely abductor is a family member, neighbor or acquaintance, not a stranger. But Young said that "statistics are not guiding this investigation."

"Everything is still on the table," he said.