Baby Lisa Irwin Missing: Investigators Question Brothers as Baby Lisa Turns One (VIDEO)

Baby Lisa Irwin of Kansas City, MO, should be celebrating her first birthday today. Instead she remains missing as police announced that they have finally been granted access to her older siblings, who had been in the house the night their sister disappeared.

 Baby Lisa Irwin Missing: Investigators Question Brothers, As Baby Lisa Turns One

The young step brothers were interviewed for the case on Thursday, after an earlier scheduled meeting had been canceled by attorneys for Deborah Bradley and Jeremy Irwin, the parents of the missing girl.

Reportedly, the interviews were conducted by a forensic interviewer with experience and training in interviewing children. The interviewer wore an earpiece, where investigators who had been eavesdropping could suggest areas that would require expanding by the boys who are under the age of 10.

It is unclear whether investigators were able to acquire samples of the boys’ DNA.

Kansas City police officer Darin Snapp had expressed the desire of police to acquire those samples, in order that they might be able to identify other unknown DNA samples collected at the home of the missing girl.

Beyond the interviews of the boys, there has been no new leads discovered by police, despite reports that police have received over 1200 tips since the little girl was reported missing on Oct.4.

Bradley and Irwin have reportedly not spoken to police since the child was first announced to have disappeared. Police are reportedly in talks with attorneys of the couple, to arrange a date for interviews.