BENNINGTON, Neb. -- Two people remain hospitalized after a boating incident on Monday.

The Douglas County Sheriff's Office said it happened at Bennington Lake Monday morning.

Authorities said they believe a juvenile was driving a boat pulling three people on innertubes and struck a bridge abutment.

Two girls, ages eight and 15 were transported from the scene in ambulances and a 47-year-old man was transported via medical helicopter.

Officials said the man is still listed in serious condition while the 15 -year-old remains in critical condition.

Sheriff officials said authorities were still investigating the incident but confirmed that alcohol and drugs were not a factor.