A Florida amusement park has been hit with a lawsuit by the parents of a boy who fell 20 feet to a concrete floor from a zipline.

The accident occurred on Sept. 1 while the family was at Urban Air Adventure Park in Lakeland, Florida. The lawsuit alleges that the park staff didn’t secure the boy properly when he got up to ride the park’s zipline, as the back and leg straps weren’t fastened properly, causing the boy to fall.

The fall was caught on video and has since appeared online. It shows the boy rounding a corner on the zipline before falling to the floor. The staff then rushes to help the boy.

“You see a child, you see any person, fall like that, with that force, land on the concrete surface, as a human being, you should be horrified,” the family's attorney Steven Capriati told Tampa Fox affiliate WTVT.

The lawsuit also says Urban Air didn’t take the proper safety precautions when it came to the park since there's no safety net or padding under the zipline.

“We allege in the complaint there was a design error,” Capriati said. “There could have been more done in terms of the implementation of safety measures that could have at least reduced the risk.”

Urban Air issued a statement to WTVT in response to the lawsuit.

“Urban Air is fully committed to the uncompromising safety and well-being of our guests and employees. As a family-owned and operated company, safety is at the heart of everything we do. We take matters of this nature very seriously and can assure that appropriate measures have been taken. All staff members have been retrained on all attractions and the employee in question is no longer with us. We are thankful to hear that the child is back in school and we will continue to keep him and his family in our thoughts and prayers through his full recovery.”

Courtroom
This photo shows a view of the defendant's table in a courtroom closed due to budget cuts and layoffs, at the Stanley Mosk Courthouse in Los Angeles on March 16, 2009. Robyn Beck/AFP/Getty Images