The investigation into the November death of 18-year-old Brittany Wawrzyniak has been closed, Worth police announced Thursday afternoon.

“The death of Brittany Wawrzyniak has been determined to be accidental,” Chief Martin Knolmayer said in a news release.

Wawrzyniak’s death and the subsequent police investigation spurred intense reactions in Worth.

Just this month, Wawrzyniak’s family and supporters packed two different village board meetings questioning the official account of how she died in a Worth park’s parking lot.

Authorities have said Wawrzyniak, 18, was killed Nov. 8 after falling out of car driven by Eric Johnson, 20, of Midlothian, onto the pavement in a parking lot, 7425 W. 115th St. Wawrzyniak paid $200 to buy 30 pills of clonazepam, an anti-anxiety medication that goes by the street name of Klonopin, or K-pins, according to prosecutors.

Johnson is charged with selling a controlled substance in connection with Wawrzyniak’s death.

Lily Arboleda, 18, of the 6800 block of Kedvale Avenue, Chicago, is charged with conspiring to commit aggravated battery with Wawrzyniak regarding a fight with a third girl at the Worth boat launch.

Worth police contend Wawrzyniak, a Shepard High School graduate and student at the Illinois Institute of Art, met Johnson at the park’s boat launch. Officials said Wawrzyniak conspired with Arboleda “to arrange a fight” with the third girl.

Rebecca Tully, Wawrzyniak’s mother, has insisted that her daughter was not involved with drugs and has led a public campaign to clear her daughter’s name.

“In my eyes, this is not over,” she said Thursday.