Batavia Township, OH — Carbon monoxide contributed to the death of 21-year-old Allyson Sidloski at East Fork State Park, a coroner said Friday.

Sidloski, of Strongsville, was a student-athlete on the soccer team for the University of Cincinnati.

She disappeared under the water while boating on May 22, her body found a day later.

According to a report from the Clermont County Coroner released Friday, Sidloski’s death has been ruled as a drowning. However, officials said that carbon monoxide inhalation was a contributing factor to her death.

The Ohio Department of Natural Resources said Sidloski was hanging onto the swim platform of a boat before she disappeared into the water.

Now, officials say she likely inhaled carbon monoxide from the boat, which caused her to dip below the water.

She was not wearing a life jacket.

Sidloski was a standout soccer player, who recently completed her sophomore season for the Bearcats. She did not play during the 2020 season, which took place during the spring of 2021, due to injury.

She was also a standout in the classroom, being named a TopCat scholar in multiple semesters for achieving a 4.0 GPA.

She made her collegiate debut against East Carolina in 2019 and played in UC’s American Athletic Conference Tournament opener against SMU. She was tabbed for Academic All-AAC honors following the 2019 campaign and redshirted as a true freshman in 2018.

She was the third member of her family to play soccer at the collegiate level, following her father David (Cleveland State) and sister Katie (Indiana State and Cleveland State).

Sidloski is survived by her parents David and Tracie and two sisters, Katie and Nicole.