She was one of several women attacked (though not raped in her case) in a spree of rapes/attacks in that part of Chicago. She helped identify a person named Mario Villa in those attacks. And now this happened to her.
Thanks for this link to the same story:
An arrest warrant issued Thursday identified the suspect as Roberto Ramirez, 24, whose last known address was 6151 N. Winthrop Avenue. Police said the man may have fled to his native Mexico. Ramirez is accused in the beating and strangulation death of Dorner, 21. He lived in a fifth floor apartment. Dorner lived on the 10th floor. Her murder was discovered on Monday.
“My understanding is he was not on the lease and that he was a guest,” said Alan Didesch, a representative for the building’s landlord, Wilmette Leasing Co. “The individual who committed this heinous act was in the building by the invitation of another tenant. The security was more than adequate, there’s no evidence the security system was inoperative or breached,” he added.
Dorner’s killing is the second in the building in the last two months. Building janitor, Petrit Turkesi, 51, Skokie, was beaten to death and robbed December 8 in the laundry room of the high rise. His killer has not been caught. --snip
http://www.wbbm780.com/includes/news_items/news_items_more.php?section_id=9&id=9256