Police have doubled a reward to $50,000 for information that leads them to missing 7-year-old Kyron Horman, who mysteriously disappeared from his Oregon elementary school 53 days ago.
"I'd like to announce that the initial reward of $25,000 ... is being increased to $50,000, effective 3 p.m. today," said Chief Dep. Tim Moore of the Multnomah County Sheriff's Office.
Police said the reward, offered by an anonymous donor, will be paid out for "specific information that leads us to Kyron."
As prosecutors impaneled a grand jury, police Tuesday said they could not provide details on an ongoing criminal investigation. Authorities previously have suggested the criminal investigation is focused on the second-grader's stepmother, Terri Horman, the last person to be seen with him.
Kyron's biological mother, Desiree Young, made a tearful appeal at a press conference Tuesday, telling her son they were working everything to find him.
"We love you, Kyron," she said. "Never give up hope. We are all coming to get you to bring you home.
"We feel the investigation continues to be on track and is progressing toward finding Kyron," Young said. "Our goals are to expedite the search, bring him home as quickly as possible, and bring justice to anyone responsible for his disappearance."
Police said they had received 3,500 leads and thousands of tips, according to Capt. Monty Reiser.
Reiser said all tips were processed by experienced detectives, ranked in order of credibility and tracked using special computer software.
As the investigation unfolds, prosecutors already seem to be building their case against Terri Horman.
A close friend of the second-grader's stepmother was called Monday to testify before a grand jury.
DeDe Spicher, 43, had no comment outside the courthouse Monday. She has not been charged with a crime, but Kyron's biological parents, Kaine Horman and Young, have said publicly that they believe she aided Kaine Horman's estranged wife Terri Horman in the disappearance of 7-year-old Kyron.
Legal experts say a grand jury gives prosecutors sweeping powers that investigators do not have. And in a case with seemingly more questions than answers, testimony could lead to information that will bring authorities closer to finding Kyron.
"A grand jury can be empanelled to further and enhance an investigation that has been stalled," attorney John Henry Hingson said. "Grand jurors can issue subpoenas and have documents produced to have people come forward and testify under oath."
Spicher's attorney, Chad Stavely, told ABC's Portland affiliate KATU that Spicher was asked no questions but told to return, possibly within a few weeks.
In another courtroom, Kaine Horman has filed paperwork to find the source of his wife's hefty payments to her criminal defense attorney and lay claim to a portion of her money.
According to KATU, Terri Horman allegedly had help from a third party to pay $350,000 for representation. An attorney for Kaine Horman, who reportedly is having trouble finding the money to pay for his own legal needs and support himself and the couple's 20-month-old daughter.
The search for Kyron is nearing its second month. He disappeared June 4 from his Portland elementary school after an early morning science fair.