The New Edition singer was reported to have exited with his nine-strong entourage at the beginning of the service, with Brown since revealing the reason for his decision.
© Mel Evans/AP/Press Association Images
He said: "My children and I were invited to the funeral of my ex-wife Whitney Houston. We were seated by security and then subsequently asked to move on three separate occasions.
"I fail to understand why security treated my family this way and continue to ask us and no-one else to move. Security then prevented me from attempting to see my daughter Bobbi Kristina. In light of the events, I gave a kiss to the casket of my ex-wife and departed, as I refused to create a scene.
"My children are completely distraught over the events. This was a day to honour Whitney. I doubt Whitney would have wanted this to occur. I will continue to pay my respects to my ex-wife the best way I know how."
Brown had previously revealed that he was "deeply saddened" at the death of his former spouse, who passed away last Saturday (February 11) at the age of 48.
Kevin Costner, Tyler Perry and Clive Davis were among those who spoke at the funeral service, while Alicia Keys and Stevie Wonder performed musical tributes.
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