The reward for information leading investigators to 7-year old Kyron Horman or the person responsible for his disappearance has been doubled to $50,000. The Portland boy has been missing since June 4th after vanishing from his Portland, Oregon school following a morning science fair.

The Multnomah County Sheriff’s Department held a news conference today saying “significant progress” is being made in the investigation, but officials refused to divulge any details or answer any questions from reporters. A grand jury has been assembled for the case and at least one person has appeared before it.

De De Spicher, a friend of Kyron’s stepmother Terri Horman, answered her subpeona Monday. Her attorney, Chad Stively, tells Fox News he would be surprised if Terri Horman is not indicted. Stively is a former Multnomah County prosecuting attorney.

Terri Horman was not at today’s news conference nor was her name mentioned even as police thanked Kyron’s biological parents for their cooperation. Kyron’s mother, Desiree Young, made a tearful statement saying to her son, ‘we love you, never give up hope, we’re coming to get you to bring you home.’

Terri Horman was seen with Kyron at Skyline Elementary during the morning science fair. She claims she left him there and only discovered he was missing when he failed to get off the bus in the afternoon. School officials say Kyron never made it to his class which started at 10 a.m.

Terri Horman, who has not been named a suspect, remains a strong focus of the investigation as her whereabouts in the late morning of June 4th. have not been confirmed by police. She told investigators she drove her daughter around several country roads trying to calm her down because she was not feeling well.

Kyron’s father, Kaine, filed for divorce since the disappearance after learning from police Terri had tried to hire a landscaper to kill him several months ago. Terri recently moved out of the house and has moved to her hometown of Roseburg, Oregon. She has also hired a criminal defense attorney. Kaine told reporters Terri has failed the two polygraph tests she was given and has since refused to speak with police.