CHICAGO — A man was shot and killed inside a Gold Coast hotel early Sunday morning, according to police.

Police said a man of unknown age was discovered unresponsive around5 a.m. at Sonesta E-S Suites in the 200 block of East Walton.

The man was taken to Northwestern Memorial Hospital where he was pronounced dead.

“It sounded like fireworks, at first, I thought because we were downtown, but I realized they were gunshots and it sounded like they were inside the building,” a woman who did not wish to be identified told WGN News.

Hotel guest Demetrius Doss, who has visited the hotel several times without incident, says he was shocked by the news.

“I never would guess it would happen here,” Doss said.

Gold Coast resident Charles Stanford lives near the hotel and says he plans to share surveillance video with the authorities.

“Sadly, I’m not terribly surprised because this hotel has been a problem for several years now,” Stanford said.

In a statement from the hotel, the general manager says, in part:

“We are aware of the unfortunate incident that took place at the hotel.  This was an isolated incident and there is no danger to guests or our team.  We are fully cooperating with law enforcement as they investigate the matter.  We are not in a position to comment further at this time and would ask that you refer our questions to local authorities.” 

Circumstances surrounding the shooting are currently unknown and the incident is under investigation by Area Three detectives.

No one is in custody.