A critical incident investigation has been initiated into how a 36-year-old man died after being arrested, handcuffed and placed on his side by Denver officers in the early morning hours Wednesday, according to the Denver Police Department.

Police said they responded to a 911 call made around 11:55 p.m. Tuesday by a man who was located in the area of 1331 Speer Blvd.

During the call, police said he sounded “highly agitated, was yelling at the call-taker, and after several minutes stated that he was having a heart attack and that people were robbing him,” according to a news release.

In a summarized list, police described a timeline of events that led up to the man’s arrest and death.

After the man said he was having a medical event, Denver Fire and Denver Health paramedics were called to the scene and tried to give the man medical attention, police said. When the man became “combative,” police said he “exited the ambulance and walked away,” according to the release.

When the man walked away, police said it was reported the man threw a block of concrete into a glass entry door in the 1300 block of Speer Boulevard, located near the original call location. Police said they responded to the area again to locate the man.

As an officer arrived just after midnight, a news release said they saw the man in the area who was “yelling.” After giving the man verbal commands to keep his hands up in the air, the officer said the man ran away westbound. According to the police timeline, the officer did not pursue the man at the time and called for additional officers to respond to the area.

Three minutes after the man ran from the officer, police said an apartment building security guard called 911 to report the man damaged another window. Police said two security guards at the building located in the 900 block of West 14th Avenue tried to keep the man from coming inside the building and while he was in the first set of doors to the apartments, they wrestled the man to the ground.

The guards told police that during the struggle with the man, he “punched and bit one of the security guards, and one of the guards was forced to strike the man to stop the biting.”

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