UPDATE: A 13-year-old boy died from injuries he sustained in an ATV rollover crash Saturday afternoon, the Chisago County Sheriff’s Office confirmed Sunday.

The boy was identified as Mason Lee Demenge, 13, of Chisago City.

Authorities say the crash “was not witnessed” and remains under investigation.

Demenge’s mom, Kristina Puffer, sent the following statement to 5 EYEWITNESS NEWS:

“Mason was such a sweet soul. He loved to be outdoors fishing, riding his sled, and riding his four wheeler. In the summer you would find him down at the beach, fishing, or running around town with his friends. He loved to go fishing with his step dad and his uncle. He was so caring and had the best sense of humor! He was the light of my life and we are absolutely heart broken. He had the best group of friends and the best family! He will be missed by so many people and he has touch so many hearts in his 13 years. Our family will never be the same without him, but we are all so blessed to have known him and loved him so much.“

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PREVIOUS COVERAGE: A 13-year-old boy is in critical condition after an ATV rollover crash in Lent Township Saturday afternoon, according to the Chisago County Sheriff’s Office.

Around 12:20 p.m., dispatch got a call of a ATV rollover crash with injuries on Kale Avenue off of Ivywood Trail.

When deputies got to the scene, they found the boy near the ATV. His condition quickly deteriorated and he was treated on scene by medics before being flown to Regions Hospital in critical condition.

The boy was wearing a helmet at the time of the crash.

The Chisago County Sheriff’s Office is investigating the crash.

Lakes Regions EMS, Stacy/Lent Fire Department, and Life Link Air Care assisted in responding to the crash.