A woman driving alone southbound on Interstate 25 through Larimer County Wednesday night was hit by a bullet in her neck and wounded as she sat behind the wheel of her car.

The county sheriff’s office was called at about 11 p.m. to an area near Windsor on reports of a traffic accident. Deputies instead found that a 20-year-old Milliken woman was on the interstate when the front driver’s side window of her vehicle shattered and she was shot.

“She was able to safely stop her vehicle and call 911,” the sheriff’s office said in a news release. “She was transported to a local hospital for treatment of her injuries.”

The shooting was one of four incidents over three days where moving vehicles on northern Colorado roads — two each in Larimer and Weld counties — had windows shattered. Authorities say they are working to determine if the four are connected.

On And, onThursday afternoon, authorities began investigating a possible fifth incident after a Colorado State Trooper came upon a truck on the side of the road on I-25 in Weld County. The unoccupied vehicle was missing its back window. A spokesman for the Weld County Sheriff’s Office said the car was being transported to its crime lab to determine if the window had been shot out.

“Right now we don’t even know who the registered owner is,” said Sean Standridge. “We’re planning on meeting Friday to look at all the evidence and try to figure out what’s going on.”

Authorities say an investigation into the Wednesday shooting is ongoing and that surrounding law enforcement agencies have been notified of the incident.

“There are initial descriptions of the suspect vehicle in (the) shooting possibly being a dark colored SUV-type vehicle, but we are not ruling out any other types or styles of vehicles,” Sheriff Justin Smith said in a statement. “We do not have a description of any occupants of that vehicle.”

Smith said investigators don’t believe was shooting was related to road rage and that it appears the woman was randomly targeted. Officials have not determined what type of firearm the bullet was fired from.

“The victim was struck in the throat and was very lucky in that she sustained no damage to arteries or veins and her airway was not compromised,” he wrote. “We have been able to interview her earlier (Thursday).”

A spokesman for the sheriff’s office told The Associated Press the woman was taken to a hospital where she went underwent surgery. The official said an update on her condition was not immediately available.

The Weld County Sheriff’s Office on Thursday said it was investigating after a 46-year-old Johnstown man driving in the area of Interstate 76 and Weld County Road 49 reported his front driver’s side window was shattered.

The man told deputies his window may have been shot out. No one in the car was injured.

A 21-year-old Greeley man reported that his rear window was shattered at about 11:30 on Wednesday night in Loveland as he headed east on East Eisenhower Boulevard near North Cleveland Avenue.

“When his car went through the intersection he heard a ‘pop’ and his rear window was shattered,” Loveland police said in a news release. Authorities say the man was not injured.

On Tuesday, a Larimer County Sheriff’s Office jail transport van had its right passenger window shattered as it headed northbound on I-25 north of Mead in Weld County.

Deputies were transporting three inmates from the Jefferson County jail to Larimer County when the right passenger window of the transport vehicle shattered. The transport vehicle was a white passenger van marked with “Larimer Sheriff” on the rear cargo doors.

“The damage to the window is consistent with that caused by some form of projectile designed to break glass,” authorities said in a news release. No one was injured and officials are continuing to investigate what caused the window to break.

Anyone with information on any of the incidents is asked to call Larimer County authorities at 970-416-1985. The Weld County Sheriff’s Office can be reached at 970-356-4015.

Jesse Paul: 303-954-1733, jpaul@denverpost.com or twitter.com/JesseAPaul