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INDIANAPOLIS — A police officer dove into frigid water early Tuesday morning to rescue a man from a retention pond on the south side of Indianapolis.

According to the Indianapolis Metropolitan Police Department, the man was swimming in shorts and a t-shirt and having difficulty staying afloat. This was reported just after 12:30 a.m. on Southport Crossings Way off of McFarland Boulevard.

Despite the freezing temperature, an officer removed his gear and dove into the water to rescue the man. Police said the man was unresponsive and in critical condition when taken to the hospital.

Police are actively investigating the incident.