ORLANDO, Fla. -- Three victims of the roller coaster derailment last Thursday in Daytona Beach are considering a lawsuit.

Attorney Matt Morgan is expected to hold a news conference Monday morning regarding a possible lawsuit. 

Morgan says he is representing three victims, with one of them seriously injured.

Nine people were taken to a hospital Thursday when the Sandblaster roller coaster at Daytona Beach Boardwalk derailed. Two people fell 34 feet to the ground.

The ride had failed inspection in May, but state inspectors said the problems were all corrected. The ride passed inspection just hours before the derailment.

The Florida Department of Agriculture, which inspects amusement park rides, said it was launching an investigation to determine what caused the incident.

The ride was inspected after the derailment. The inspection reports said the ride failed because of "structural integrity: other."

Halifax Health Medical Center in Daytona Beach said Monday that one of two of its remaining patients has been discharged.