Two people were killed and 20 others were injured after a pair of cars crashed and careened into a crowd late Sunday night, according to authorities.

The crash took place just after 10:45 p.m. Sunday night when a black Ford Taurus traveling westbound on O Street struck a white Toyota Corolla facing eastbound on the roadway,the Lincoln Police Department saidin a statement on Monday.

The LPD did not immediately respond to PEOPLE’s request for comment.

Taylor Arizola told theJournal Starhe was one of the people to help lift the Ford off of the victims. He said he was in the Verizon store parking lot across the street from Barnes and Noble when he heard and saw the car driving out of control before hitting the Toyota.

During a news conference Monday afternoon, Lincoln Police Chief Teresa Ewins said neither vehicle involved in the crash was part of the Americruise event, according to theAssociated Press.

“At the time of the collision there wasn’t a lot of people out,” Ewins said, per the outlet. “The cars were not flowing down [the] street as normal during this event.”

An investigation into Sunday’s crash is ongoing. The LPD said in Monday’s Facebook post that it does not believe the crash was “an intentional act” and that there is no evidence to support such a theory.

According to theJournal Star, authorities have reported some drivers tried to rile up crowds with dangerous tricks at the event in previous years. In July 2000, 39-year-old Connie McCullough died while trying to protect her children when a non-participating car drove off of O Street, the outlet reported.

Ewins said at Monday’s press conference that dangerous driving around the event is “not acceptable” and promised “things will change.”

“We’ll be changing a lot of things in regards to people that are coming to Lincoln to cause havoc like that,” she said, per the AP.

Anyone with information about the incident is asked to call the LPD’s non-emergency number at 402-441-6000 or Crime Stoppers at 402-475-3600.

The LPD has also asked that “anyone who witnessed this crash to come forward with any information they may have regarding this case, including video or photographic evidence.”

“We will work tirelessly to determine what occurred and hold those responsible for this tragedy accountable,” the department wrote in its Facebook post.

source: people.com