"Jennifer and her family appreciate the enormous amount of love, support and prayers they have received while she and her family try to cope with this tragedy and continue the search for Julian," said a statement from Hudson's rep Lisa Kasteler. It also offered a reward and asked the public to give any available information to the Chicago police. "We ask that all inquiries be directed to the Chicago Police Department, Area 1 Detective Division at 312/747-8380."
As investigators continued looking for forensic evidence at the south side home of Darnell Donerson, 57, and Jason Hudson, 29, the FBI confirmed to PEOPLE that they are also assisting with the investigation.
"I can confirm that we have been asked to provide assistance to the Chicago police department to assist in the search for 7-year-old Julian King," said Ross Rice, special agent and spokesman for the Chicago office of FBI.
After her sister Julia's impassioned plea for the return of her son at a press conference on Saturday, Hudson took to her MySpace Celebrity page to thank fans for the outpouring of support on Sunday.
"Thank you all for your prayers and your calls," she wrote on the Web site. "Please keep praying for our family and that we get Julian King back home safely. If anyone has any information about his whereabouts please contact the authorities immediately. Here is a picture of Julian and what he was last seen wearing. Once again thank you all for being there for us through this tough time."
Reporting by NINA BURLEIGH
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