PORTLAND, Ore. -- The mother of missing Portland boy Kyron Horman made an emotional public plea Friday afternoon to increase the reward for finding her son.

Desiree Young expressed frustration that it's been four months, and I don't know what else to do, saying it was her decision alone to make the public plea. I'd like to appeal to everybody ... to help get the reward increased ... and come together and show their support for Kyron.

Kyron disappeared from Skyline Elementary on June 4. No suspects have been named in his disappearance. Desiree spoke at the wall of hope at the Tualatin Valley Fire and Rescue station on Skyline Boulevard.

Raw video:Kyron's mom pleads for help

Desiree appealed to the public to help increase the reward to $350,000, which she said was what Terri's legal fees are for defense attorney Stephen Houze. Terri has not been named a suspect, yet much of the investigation has focused on her as she was the last person to report seeing Kyron the day he disappeared.

There is someone out there that has him and someone that has information ... I want that person to come forward. I guess I'm at this point where I don't know what else to do.

The reward currently stands at $50,000 and donations can be made to

I want someone in Terri's circle to come forward with information, Young said.

Young admitted frustration that, four months later, Kyron still had not been found. I guess I'm disappointed, confused, said Young.

Investigation continues

Multnomah County Sheriff Dan Staton said in September investigators would be moving to a task force format, more like a business plan, to better utilize resources in the case. Shifted resources would also help maintain the effectiveness of the department in areas other than the Horman investigation, he said in a news conference on September 17. DETAILS:Sheriff refocuses investigation

We continue to support Law Enforcement in the most recent transitioning to the 'task force' style of investigation, a statement from Desiree and Kyron's father Kaine Horman read last month. We believe this will be a more efficient use of Law Enforcement's resources and it shows a continued dedication to finding Kyron. We appreciate all that the Multnomah County Sheriff's Office has done so far in looking for our son and we will continue to root for them in all that they do to help us find him.

A fundraiser was set for the Kyron Horman Foundation. Fifty percent of sales on trees and shrubs from the The Sleepy Ridge Tree Farm in Mulino on October 9 and 10 will be donated. A website was being set up for the foundation.

Meanwhile, a divorce hearing for Kaine Horman and Kyron's step-mom Terri-Horman was set for October 7.

Complete coverage: Kyron Horman case

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