A boat crashed into a brick wall and capsized in Lake Michigan on Friday.  Authorities rescued six people from the water. The horrifying accident took place at 4 a.m. The rescued people were sent to the hospital, while the search for the seventh person, a 20-year-old female, continued.

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CFD got a report of a boat in distress at 800 N. Lake Shore Drive, close to the “playpen” region of Lake Michigan, at around 2:40 in the AM. Seven adults, all between the ages of 20 and 30, were reportedly on a boat that was headed back toward land when it may have collided with a breakwall and capsized. The adults included 5 females and 2 males.

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The accident happened on Friday morning, according to the Chicago Fire Department, and was close to the Navy Pier. One passenger was still in critical condition when authorities responded to calls about the sinking boat.

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The condition of the other five who were pulled from the water is currently serious, while the authorities continue the search for the seventh. Fire authorities started looking for the missing person, before turning the case over to the police.

Photos and video taken at the location revealed a large number of rescue workers as teams searched for the missing person in the midst of heavy rainstorms, lightning, and thunder.

The search ended around 5:30 a.m. when the 20-year-old was found dead pinned beneath the boat.

A breakwall, often constructed outside of a harbor, reduces damage caused by the waves’ assault. It’s believed that the boat was headed back toward land when it hit the wall and flipped over.