Crime Kyron Horman's Father Kaine Responds to His Ex-Wife Terri's First Interview Since His Son's Disappearance Kyron Horman hasn't been seen since June 4, 2010 By Elaine Aradillas and Tara Fowler Published on January 20, 2016 02:10 PM Share Tweet Pin Email Photo: Courtesy Terri Horman Kyron Horman’s father has broken his silence following his ex-wife Terri’s exclusive interview with PEOPLE about her stepson’s disappearance. Kyron, then 7, was last seen on June 4, 2010, when Terri dropped him off at a science fair at his school in Portland, Oregon. She took photos with her digital camera, toured his classmates’ projects, and then said good-bye. Kyron has been missing ever since. “I am encouraged that Ms. Horman is now willing to make public statements about the events that occurred on June 4, 2010,” Kaine Horman, who officially divorced Terri in late 2013, tells PEOPLE. He adds: “I hope that Ms. Horman will now cooperate with law enforcement to provide additional information that might lead to the discovery of Kyron.” • For more about the story and what Terri thinks happened to Kyron, pick up this week’s issue of PEOPLE on newsstands Friday. Tune in to ABC’s GMA and Nightline on Friday for a PEOPLE/ABC News exclusive sit down interview with Terri Horman. ABC Breaking News | Latest News VideosA cloud of suspicion has followed Terri since Kyron’s disappearance, though she has never been named a suspect or a person of interest in the case. (Officials for the Multnomah County Sheriff’s Department say it is an “ongoing investigation.”) To this day, however, Terri insists she did not harm or kill Kyron and has no idea what happened to him or where he is. “What if? All those what-ifs. What if I had gotten ready faster? What if we had done something sooner? What if I had stayed for the whole fair and not left early?” she wonders. “I wish I could go back to that day and do something different.” Anyone with any information about Kyron’s disappearance, call 1-800-843-5678.