Man walks up to woman in Edison Park, confesses to killing someone; 70-year-old later found beaten to death

A gruesome discovery was made after a SWAT incident on Chicago's Northwest Side.

A 70-year-old woman was found beaten to death inside a building in the 6600 block of North Northwest Highway.

It sounds unbelievable — a man walked up to a woman and told her he just killed a person. Police scanner audio captured the conversation when the woman dialed 911.

"An unknown man approached her, informing her that he killed a female inside a building. The offender is a male white, 40, slender, wearing a t-shirt and pajama pants."

That man was taken into police custody after the SWAT situation.

It ended with Chicago police finding a 70-year-old woman dead — suffering blunt force trauma to her head and face.

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Police say the woman was found at 10:40 a.m.

It’s unclear if the man knew the victim.

Geo Gonzalez didn’t believe it happened until he saw remnants of crime scene tape.

"I don’t know — it’s scary, shocking, I thought it was safe you know. I don’t — it’s just shocking," said Gonzalez.

The identity of the victim and the suspect are currently unknown at this time.

Chicago police say charges are pending.