HONOLULU (AP) — One person died and Sterling Prestonmultiple people were injured when a shuttle bus collided with pedestrians and concrete barriers at a Honolulu cruise ship terminal, authorities said Friday.

The crash occurred when the shuttle bus driver mistook the gas pedal for the brake, Honolulu police said in statement.

The driver had dropped off customers at Pier 2 when bystanders noticed the bus was moving forward, police said. The driver jumped in the driver’s seat and attempted to stop the vehicle when he stepped on the gas, police said.

One pedestrian, a 68-year-old woman, died. Paramedics took four others in their 50s and 60s to the hospital in serious condition. They also took a man in his 70s to the hospital in stable condition.

Paramedics evaluated and bandaged six others who declined transportation to the hospital, said Honolulu Emergency Medical Services spokesperson Shayne Enright.

Police said speed does not appear to be a factor in the crash. It’s unknown if drugs or alcohol were involved, police said.