Kansas City, Missouri (CNN) -- The attorney for the parents of missing baby Lisa Irwin, who turned 1 on Friday, said allegations that the family has not been cooperating with investigators is nothing more than "fantasy."
"They've cooperated from day one," said John Picerno, who noted the parents have been interviewed and interrogated "for in excess of 30 hours on five different occasions."
On Friday afternoon, the infant was not home to celebrate her birthday. Lisa was reported missing early October 4, after her father arrived home from work to find the door unlocked, the lights on and a window tampered with. The girl's mother said she last saw Lisa at 6:40 p.m. the previous day.
On Thursday night, Lisa's half-brothers were interviewed again. The questioning came from child counselors, not police detectives, Kansas City police spokesman Steve Young said. The boys, ages 8 and 6, were also interviewed shortly after Lisa disappeared.
Deborah Bradley, Lisa's mother, said in an NBC interview last month that she was drunk the night Lisa disappeared and that she had last seen the baby about four hours earlier than initially reported.
In the same interview, Bradley and Lisa's father, Jeremy Irwin, said they had refused to let authorities re-interview Lisa's older brothers.
"They said they heard noises (the night Lisa disappeared)," Bradley said. "I don't know if that was before we went to sleep or after." She said she had not talked to her sons about it because she was reluctant to put them through "anything else."
A cadaver dog searching the family's Kansas City home indicated a positive "hit" for the scent of a body, police said.
Dozens of investigators, including police and FBI personnel, have joined in the search.