Sheriff's office offers $50,000 for info about Kyron Horman:

As the fifth anniversary of Kyron Horman's disappearance approaches, the Multnomah County Sheriff's Office is publicizing its ongoing $50,000 reward for information that leads to the discovery of the missing boy.

Kyron Horman was 7 when he disappeared from Skyline School on June 4, 2010. His stepmom Terri Moulton Horman had brought Kyron to school early that morning to participate in a school science fair.

The second-grader never made it back to his regular class, but he wasn't reported missing until later that afternoon when he didn't return home by school bus. Despite the state's largest search-and-rescue operation for the missing child, he hasn't been located. No arrests have been made, but a criminal investigation into his disappearance continues.

Kyron would be 12 now, and turn 13 in September..

Multnomah County Sheriff Dan Staton and District Attorney Rod Underhill declined to answer questions about the status of the case, but instead the sheriff's office put out a four-paragraph statement Thursday.

The case remains active , with a full-time sheriff's detective "primarily assigned'' to the Kyron missing child investigation, according to the sheriff's office.

A retired FBI agent with years of experience working on a Child Abduction Rapid Deployment team also continues his involvement in the case, reviewing evidence collected.

More than 4,000 tips have been received by the sheriff's office. They continue to come in on a daily basis, information from within the United States and globally, the sheriff's office said.

A Multnomah County grand jury has heard evidence in the case, "and is empaneled to hear available relevant testimony,'' the release said.

"The Multnomah County Sheriff's Office and our agency partners in this investigation remain committed to solving this crime and bringing Kyron home,'' the statement said.

The sheriff's office released this missing flier publicizing the $50,000 reward, which contains photos of Kyron when he was 7, and other age-progressed images.

The reward is not new. Eight weeks after Kyron disappeared in 2010, the sheriff's office increased a $25,000 reward to the $50,000 amount.

Any information about Kyron's disappearance should be directed to the sheriff's office tip line at 503-261-2847.