UPDATE: White Bear Lake police said a man was arrested in connection to a fire that left one with critical injuries late Sunday night.

Christian Thomas Dahm, 45, was treated by medical staff and then taken to the Ramsey County Adult Detention Center where he will be held pending formal charges for negligent fires and dangerous smoking, according to the White Bear Lake Police Department.

Police say Dahm lived at the home where the fire broke out.

PREVIOUS COVERAGE: One person is critically injured after a fire broke out overnight in White Bear Lake.

One of the units of a four-unit townhome was fully engulfed in flames when first responders arrived and the fire was starting to spread to another unit, the White Bear Lake Fire Department says.

A 5 EYEWITNESS NEWS photographer got footage of the blaze at around 11:30 p.m. Sunday just off of Aspen Court near Interstate 694 and Highway 120.

Crews then found one person inside and that victim was seen being taken out of a unit and into an ambulance by first responders around midnight.

The fire department says the victim suffered critical injuries and was taken to a hospital for treatment.

The cause of the fire is under investigation.

Police officers from White Bear Lake, North St. Paul and deputies from Washington County were present and placed crime scene tape around the home. The state fire marshal’s office also responded to the fire.