The body of a popular New York YouTube star who had been missing for several days was found in the East River, authorities announced Tuesday.

Desmond Amofah, 29 — known online as Etika — was reported missing last Wednesday after he posted a since-deleted video about being suicidal.

His body was found at around 6:20 p.m. Monday near the South Street Seaport, and cops confirmed the death Tuesday.

The medical examiner has yet to determine the cause of death.

Last week, police found items belonging to Amofah, including his ID, cellphone and a Nintendo Switch console, on the Manhattan Bridge.

A neighbor of his family in Jamaica, Queens, called him “one of the nicest people you’d ever meet.”

“I’m really shocked,” Leon Cohen, 69, told The Post Tuesday.

Amofah, who mainly reviewed Nintendo games on YouTube, had uploaded a nearly eight-minute video days before he disappeared in which he repeatedly apologized and talked about suicide.

“I’m sorry for leaving such a stained legacy,” he said in the video. “I hope that my story maybe helps to make YouTube a better place in the future where people know boundaries and limits and how far things should go.”

“You know, I wasn’t suicidal before — I ­really wasn’t. But one thing I didn’t realize was that the walls were closing around me so fast. I really had no intention of killing myself but I’d always push it too far,” he added. “I guess I am mentally ill.”

The social-media influencer, who had racked up hundreds of thousands of followers on YouTube, Instagram and Twitter, also spoke of the dark side of ­Internet fame.

“Let my story be one that advises caution on too much of the social- media s–t, man,” he said. “It will f–k you up and give you an image of what you want your life to be and it can get blown completely out of proportion, dog. Unfortunately, it ­consumed me.”

YouTube mourned Amofah Tuesday, calling him “a beloved member of our gaming creator community” in a tweet on its YouTube Creators Twitter ­account.

“All of us at YouTube are sending condolences to his loved ones and fans,” the tweet read.

Fans also flooded Twitter with memorials.

“I am so heartbroken right now,” Twitter user @sofjoji wrote. “Etika was such an AMAZING influencer.”

Another Twitter user @AlexGalax77 wrote,: “Rip Etika you died way too young. You were always my favorite content creator. We will never forget you Etika.”

Additional reporting by Reuven Fenton