At the family's request, Kansas City police have postponed interviews with the 5- and 8-year-old brothers of missing baby Lisa Irwin, whose disappearance has captured the nation's attention.

Capt. Steve Young says police interviews with the sons of Deborah Bradley and Jeremy Irwin scheduled for Friday were postponed at the request of a family lawyer, Joe Tacopina. Young says Tacopina indicated interviews might be held next week.

Young says he doesn't know why the attorney requested the postponement.

On Wednesday, family lawyer Cyndy Short told FOX News Channel that the boys, aged six and eight, would be re-interviewed by police about the night their sister disappeared from the family home in Kansas City, Mo.

Cyndy Short is now off the case, Judge Jeanine Pirro revealed on FOX News Channel Friday morning, though it was unclear whether she was fired. Tacopina is now the lead lawyer, Pirro said.

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Police talked to the boys after their sister, Lisa, was reported missing Oct. 4 but say Bradley and Irwin haven't allowed them to interview the boys since. The boys are the couple's sons from previous relationships.

On Thursday, Kansas City police searched a small lake near the home of missing 11-month-old Lisa Irwin. Police say the search was not initiated by a tip, but rather an expansion of their search.

The search at Chaumiere Lake lasted only about an hour and nothing of significance was found, according to police spokesman Darin Snapp.

Baby Lisa's parents continue to be the subject of intense media and police scrutiny over their actions the night she disappeared.

Bradley admitted in several interviews that she drank between five and 10 glasses of wine Oct. 3, the night Baby Lisa vanished. She told FOX News Channel's Megyn Kelly it was possible she blacked out after drinking, but denied that anything could have happened to her daughter while she was drunk.

She also admitted she last saw her baby at 6:40pm local time, not 10:30pm, as she had originally told investigators. Baby Lisa, whose birthday is Nov. 11, was reported missing more than nine hours later -- around 4:00am -- after her father returned home from work and noticed she was gone.

Last week, an FBI cadaver dog searching the family home detected the scent of a human body, prompting a subsequent extensive search.

Police say they have no suspects in Lisa's disappearance.

Newswires contributed to this report.