One person died and two others were taken to a medical center for treatment Sunday from apparent carbon monoxide poisoning on a boat on the St. Croix River, according to the St. Croix County sheriff’s office.

The three were found around 5:45 p.m. at the Highline Beach in St. Joseph Township, on the Wisconsin side of of the St. Croix River.

They had planned to go camping on a beach Saturday night. Water patrols were sent out to look for the boat when no one was able to reach them on Sunday.

Ashley Speer, 24, of Glenwood City, Wis., was pronounced dead at the scene. Justin Roskos, 25, of Hastings, and Hayden Johnson, 27, of River Falls, Wis., were taken to Hennepin County Medical Center for treatment.

Officials suspect carbon monoxide poisoning as the cause, but the investigation is ongoing. The boat, a 34-foot Wellcraft, was registered to Roskos, according to the sheriff’s office.

A similar incident in October 2015 on Lake Minnetonka led to the death of 7-year-old Sophia Baechler. “Sophie’s Law,” spurred as a result, will be enacted in Minnesota in May 2018 and will require certain motorboats to be equipped with a functioning carbon monoxide detection system. Related Articles Wisconsin hits second-highest daily total of COVID-19 cases Thursday at 2,392

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The product of incomplete combustion, carbon monoxide is a poisonous, odorless, colorless and tasteless gas.