(CNN) -- The parents of a missing Missouri girl have refused to be interviewed separately by authorities, Kansas City police said Wednesday. 

But the attorney representing Jeremy Irwin and Deborah Bradley, parents of 11-month-old Lisa Irwin, said the couple is not opposed to separate interviews, but do not want what police requested -- an unrestricted interview with no attorneys present. 

"Being questioned separately is not the issue," said attorney Cyndy Short. She said the couple has been cooperative and has previously been interviewed separately as well as together. They don't mind being interviewed separately as long as the detectives are fair, open-minded and non-accusatory, she said. 

Lisa was reported missing about 4 a.m. October 4, after her father, Jeremy Irwin, arrived home from work to find the door unlocked, the lights on and a window that had been tampered with. The girl's mother, Deborah Bradley, said she last saw Lisa at 6:40 p.m. the night before. 

Kansas City police Capt. Steve Young said Tuesday investigators had planned to conduct the separate parent interviews, but said Wednesday the couple had declined. Young said he did not dispute reports that the family had cooperated and answered questions, but the police department detectives still had unanswered questions. 

Meanwhile, Lisa's half-brothers, who were in the family's home the night she disappeared, will be re-interviewed by authorities on Friday, Kansas City police said Wednesday. 

The boys will be interviewed by a "child services specialist trained to interview kids," Young said. The interview will be non-confrontational, he said, and a police officer won't even be in the room. 
who will interview them?
authorities