DES MOINES, Iowa —A bicyclist is in the hospital after being hit by a pickup truck in Des Moines Wednesday.

Police said a truck driven by Austin Clark, 18, hit a bike ridden by Christopher Koranda, 36.

Witnesses said the small white Chevy pickup truck was driving northbound on 63rd Street, hit the bike and then continue to drag the bike through the intersection. The truck had visible damage to the windshield and front bumper.

According to police, two bicyclists were riding on the far right side of the road when it happened.

"Many times, it revolves around the operator of the vehicle (the 4-wheel vehicle) not seeing or not paying attention, not being aware enough of their surroundings to know of the other vehicles in their area," said Sgt. Jason Halifax, Des Moines police spokesman.

Koranda was thrown into the air during the crash and hit the windshield, witnesses told police.

Koranda was taken to Mercy Medical Center. Police said he is in stable condition with a broken pelvis and a head injury.

Police reported that Clark had slow speech and dilated pupils when questioned just after the crash.

"The truck itself had the odor of marijuana coming out of it, and marijuana was found in the truck as well," said Halifax.

A police report shows an officer found two Ziploc bags of marijuana in the truck and drug paraphernalia.

According to the police report, Clark admitted to the officer that he had smoked marijuana earlier in the day.

Clark was charged with OWI -- first offense, serious injury by vehicle, possession of schedule I -- marijuana and possession of drug paraphernalia. He was taken to the Polk County Jail, but has since been released.

Clark's attorney Guy Cook told KCCI on Thursday afternoon that Clark will plead not guilty to the charges against him.

Cook said Clark "is a fine young man from a good family. He is distraught over the incident. Our investigation into the precise circumstances of the accident is continuing."

Brad Overholser of the Des Moines Bike Collective preaches bicycle safety and advises bicyclists to drive defensively.

He said slowing down in high-traffic areas give cyclists more time to know what's ahead and plan the smarting approach.

"A lot of where cyclists go wrong is they do unpredictable maneuvers or something that's out of the norm," said Overholser. "You've got to keep your head up, don't wear headphones when you're cycling, be very aware of your surroundings, have all the safety equipment you need: Lights, vest, helmet, rear view mirrors help a lot too."

The crash remains under investigation.