Two Chicago area college students who were being held in a Copenhagen prison after a ride with an Uber driver went wrong were released Monday. But a spokesperson told CBS News they had been made to forfeit their passports and remain in Denmark.

Their parents are there now doing what they can, but they keep running into legal roadblocks.

The two students are St. Ignatius College Prep alumni who were visiting friends for spring break in Denmark. Their parents said they got in an Uber, realized they had put in the wrong address, and asked to get out.

What transpired next is why were in prison for roughly two weeks, they say.

"Approximately 6 a.m. in the morning, I got a text from a foreign number saying, 'Mom, I'm in prison in Copenhagen,'" Sara Buchen-Ray said.

She was four hours away from picking up her 20-year-old son, Owen Ray, from O'Hare International Airport on March 31 when she got his text. As of last week, she's been in a Copenhagen Airbnb, doing anything she can to get him out of a Danish prison where Ray was put after he rode in an Uber with a friend.

"When they got in the Uber, they realized the wrong address had been put in," she said.

Buchen-Ray said they asked to get out and ordered a new ride. 

"Approximately five minutes later, the Uber driver circled back around and found them walking and started yelling at them," she said.

Buchen-Ray says this is all according to a video played in a Danish court hearing this week.

The Uber driver accused Ray and his friend of not paying for the ride, but receipts show they did. 

"The Uber driver first says, 'I'm going to call the police,' and you can hear them saying, 'We've done nothing wrong. Call the police,'" his mother said.

"While they were waiting at the gates to board their planes to go home, they were arrested by the Danish police," said Buchen-Ray's attorney in Chicago, Jordan Finfer.

Finfer said Ray was arrested at the airport. He has not been charged or convicted, but Finfer said he was detained due to "flight risk."

"They are in prison where they're locked up 23 hours a day," Buchen-Ray said last week.

Ray's mother said she gets to speak with him on the phone one day a week and visit him one day a week. Now, they are waiting for a trial that should take place this month, but it's the years to come she is the most worried about for Ray.

"There are going to be ramifications from this. You know, when you're locked in a jail cell for 23 hours a day, you can't come out without nothing," she said.

That trial should take place this month. However, there is a five-day court holiday for Easter, which could push it back. 

Ray and his friend have missed two weeks of college so far. Ray is a student at Miami University in Ohio.

A spokesperson for Illinois Senator Dick Durbin said in a statement, "Senator Durbin's office has been in regular contact with the family and with our embassy in Denmark since being made aware of situation." 

A spokesman for the U.S. Department of State also said they are aware of the arrests and monitoring the situation, writing, "Staff at our embassy in Copenhagen are providing consular assistance. The Department has no higher priority than the safety and security of U.S. citizens abroad."