The Kansas dad of the boy killed on the world’s tallest water slide is demanding to know how his son could have lost his life on the ride — and trying to prevent a similar horror from ever happening again.

“While we try to step forward into the new normal life without Caleb in our presence, we find hope with the current investigation into the incident to provide answers and assurances that such tragedy would not strike again,” Rep. Scott Schwab said in his first public statement since 10-year-old Caleb Thomas Schwab was laid to rest last week.

Caleb died Aug. 7 while riding the Verrückt slide at the Schlitterbahn water park in Kansas City, Kan. Authorities said the boy died from a “fatal neck injury.” A source familiar with the investigation told the Associated Press that Caleb was decapitated.

His death is still under investigation.

“Words will never convey the appreciation Michele, the boys, and I have for all those who expressed their love and support the last week and a half,” Schwab said in the statement issued through his attorney, Michael Rader, according to the Kansas City Star.

“‘Thank you’ seems so inadequate to express our appreciation, but it is the only phrase we have. So, from the depths of our hearts, we thank you.”

The speed slide sends riders down 17 stories at up to 65 miles an hour. Its name means “insane” in German.