A suspect was arrested after a woman was sexually assaulted in Chicago's River West neighborhood early Monday morning. 

Sources said the suspect was a rideshare driver, and the victim his passenger.

According to Chicago police, the 29-year-old woman was assaulted in the 800 block of West Superior Street, just west of Halsted Street and close to the Bally's Chicago casino construction site, around 2:30 a.m.

Police sources said the suspected the victim was a rideshare passenger. She was taken to St. Mary of Nazareth Hospital for an evaluation.

The driver of the gray Toyota Prius in which the woman had been a passenger tried to pull away and flee, but he struck a pole and was taken into police custody, police said.

"Ultimately, we want to make sure that people to have the tools necessary to arm themselves with safe practices anytime that they use a rideshare," said Bryant Greening of Legal Rideshare, the first firm in the U.S. entirely dedicated to Uber, Lyft and other rideshare-related accident and injury claims.

CBS News Chicago reached the company seen marked on the car — EZ Leasing Cars. The company confirmed it was cooperating with police, and has shared video from inside the car with police.

"I don't think the fact that the vehicle was leased is a part of it," Greening said. "Ultimately, it falls on the companies to make sure they are putting safe drivers on the road." 

Bryant had advice following the Monday morning incident and two others last summer, in which a man posing as a rideshare driver sexually assaulted two women.

"If something feels off about the ride, don't get in the car. If during the ride, something goes wrong, contact the police or contact a loved one right away," Bryant said. "Those senses we have that something seems slightly off? They're usually right."

Greening also advised double-checking the license plate for a rideshare vehicle before getting in, and having a short conversation with the driver before the ride starts.

Greening added that with the suspect in police custody, rideshare companies should already be taking a close look.

"Is this a one-off instance where a driver has no history of unsafe actions or complaints against them, or alternatively, is this something that's been going on for a long time where the rideshare companies should've known, should've flagged this person, and should've removed them from the platform?" Greening said.

CBS News Chicago has been checking in with Chicago police on the Monday morning incident throughout the day. Police said charges late Monday were still pending against the man in custody.

CBS News Chicago also reached the major rideshare companies in reporting this story. Lyft responded to say the assault did not occur on its platform.