Former Eastern Star 17 Brian Harvey was hospitalized after police were called to his home for a disturbing video he posted online.
In livestream, Brian described his financial problems and called for a meeting with Prime Minister Theresa May.
He raised concern for his well-being and the police attended the scene at his home in Walthamstow, north London.
Now they confirmed that he was taken to the hospital.
The Metropolitan Police said in a statement: "Around 1809 on Thursday, March 21, the police were notified of a man who threatened to take his own life.
"The agents subsequently attended an address in Walthamstow to complete a wellness check.
"The arrested man was taken to the hospital for a mental health assessment and no injuries were reported."
Brian's YouTube livestream was then taken offline.
He arrived after Brian's ex-girlfriend, Danniella Westbrook, issued an urgent appeal tonight after hearing about the worrying streaming video.
The former star of EastEnders, 45, who was dating East 17 singer, wrote on Twitter: "I'm in rehabilitation just out of a meeting, I've been in the hospital all day, I really hope this is a joke , as if my heart were not broken …
"Brian is a good man and if that's true I hope he gets the help he needs. Please tell me …
"Please if anyone has news about Brian Harvey contact me thanks x my prayers heart and thoughts are with him x please his ok x".
Danniella is currently enrolled in a residential rehabilitation program to release long-standing cocaine addiction.
He attended Brian from 1991 to 1995 at the height of his fame as a soap.
Brian stayed out of the limelight for a while, and in 2018 sparked fears among fans by posting an online video in which he claimed he hadn't left home in five years.
The singer, who had previously been open about his battles with the depression, said: "I was a prisoner in my own home for about five years.
Video not available
"Four or five years.
"I have to be trapped, like a prisoner, in my own home after selling 22 million records, I've never done anything to anyone, I just chose not to be involved."
Brian sold over 18 million records as a member of pop group East 17, but was fired by the band in 1997 for the comments he apparently made to justify the use of ecstasy.
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