Goldman Sachs analyst missing after attending concert at The Brooklyn Mirage

August 2024 · 4 minute read

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A Goldman Sachs senior analyst disappeared early Saturday morning after attending a concert at the Brooklyn Mirage — the same Big Apple venue another man tried to get into before he was found dead several weeks ago, authorities and law enforcement sources said.

John Castic, 27, vanished after leaving the Williamsburg hotspot around 3 a.m. following a performance by electronic music group Zeds Dead, according to the NYPD and his “best friend” Sara Kostecka.

Kostecka shared news about Castic’s disappearance in a Monday Facebook post, where she revealed the pair are supposed to be together at her brother’s upcoming wedding.

“Any information would be greatly appreciated, as well as sharing this to anyone in NYC that might have seen him,” Kostecka said.

“I’ve heard rumors from people about being asked to hop in a taxi/ cab from some creepy people near the Mirage – reminder to stay safe and check in on your friends,” she additionally wrote. I’m supposed to walk with him in my brother’s wedding next week. We just wanna find John.”

Castic, who lives in Lower Manhattan, is described as 6-foot-3 and 180 pounds, police said.

John Castic was last seen wearing a white and navy blue floral shirt with khaki pants. John Castic/Instagram
A friend said Castic’s phone died after he left the venue and hasn’t been turned on since. John Castic/Instagram

The Illinois native graduated from DePaul University and began his job at Goldman Sachs last August, according to his Facebook page.

His last known location was near 1133 Grand Street — about a half mile away from the concert hall, sources said.

He was last seen wearing a white and navy blue floral shirt with khaki pants, according to a missing person flier.

“Goldman Sachs’ Office of Global Security is working closely with the NYPD to help locate John. We are in touch with his family during this difficult time and the investigation remains ongoing,” spokesperson Abbey Collins said in a statement Tuesday.

Castic went missing after following a performance by electronic music group Zeds Dead. Getty Images/Kevin Mazur

Another friend told Fox News Digital that Castic’s phone died after he left the venue and hasn’t been turned on since.

“We’re absolutely very worried about him,” Jonah Shales reportedly said. “No one has had any contact with him.”

Castic is the second person to go missing in recent weeks after going to The Brooklyn Mirage, one of three concert spaces housed at the Avant Gardner that has a total capacity of 6,000 people.

A missing person flier for John Castic, who vanished after leaving the Williamsburg hotspot around 3 a.m.
Castic, who lives in Lower Manhattan, is described as 6-foot-3 and 180 pounds, police said. Facebook

The other man, Karl Clemente, 27, was turned away from the venue because “he allegedly drank alcohol” on June 11 when he went with a group of friends to see a concert, electronic music publication EDM Identity reported, citing a friend’s Facebook post. 

Clemente’s body was found days later about half a mile away in Newtown Creek behind a warehouse, according to sources.

Clemente’s death was not considered suspicious, sources said. 

The NYPD is seeking the public’s help in the case. DCPI

In March, Gothamist reported about The Mirage’s battle with the State Liquor Authority.

SLA officials lodged numerous concerns about “rampant” drug use and noted a number of people who died that attended the events there, the outlet reported.

Since 2017, three people who attended different Avant Gardner events ended up dying of accidental drug overdoses, Gothamist reported.

He started working at Goldman Sachs last year. Facebook

A 41-year-old man died in 2017, a 21-year-old woman in 2018 and a 23-year-old woman in 2021, the outlet reported after obtaining police records.

The first two deaths were tied to ecstasy or molly consumption and the 23-year-old died from effects of MDA, or known as “sally” and methamphetamine.

The owner of Avant Gardner, Juergen “Billy” Bildstein, argued his business has been unfairly targeted by SLA, Gothamist reported.

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