A popular YouTuber and gamer from Brooklyn, New York, has gone missing after apparently posting a video online that has family and friends worried, officials said.

Desmond Amofah, known online as Etika, recorded an 8-minute video apologizing to people he said he disappointed. In the video, 29-year-old Amofah discussed what he said was his mental illness and what he wouldn’t be able to see going forward.

“I’m sorry I let you all down,” Amofah said.

He has not been heard from since 8 p.m. Wednesday, when someone spoke with him on the phone, police said.

Amofah has a history with mental illness, and has been hospitalized in the past and could be a danger to himself, police sources told NBC New York.

Amofah's former girlfriend, Christine Cardona, last saw him in April, after he posted tweets officials described as disturbing and sent her illegible texts, she told InsideEdition.com.

"I was concerned so I went over to his house and the whole day was [spent] observing his mental state," Cardona, 26, said.

Cardona, a fellow gamer who goes by the name Alice Pika, said Amofah eventually made her leave, but when he claimed in a tweet that he had a way to harm himself, she called the police. He was hospitalized in that incident, she said.

It was not the only incident that ended with Amofah's hospitalization, said Cardona, who dated him from 2011 to 2017.

"He's never admitted he has a problem," she said. "He's always seemed to deny the existence of mental health disorders. Our relationship, it wasn't easy."

News that Amofah was missing has been hard for Cardona to process, but she's choosing to remain hopeful he will be found safe, she said.

"He's in pain but not harmed, I'm sure of it," she tweeted. "Have faith that he's gonna take his health seriously."

Anyone with information is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-8477, or for Spanish, call 1-888-577-4782. Tips can also be submitted at www.nypdcrimestoppers.com, or on Twitter at @NYPDTips.

Anyone struggling with mental health can get help by calling National Suicide Prevention Lifeline at 1-800-273-8255 or by clicking here.

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