Rihanna's father was thrown out of her Diamond Ball before the singer arrived because he was drinking.

The 'We Found Love' singer staged a lavish charity event in aid of her Clara-Lionel Foundation charity in Beverly Hills last week but her dad Ronald Fenty didn't even get to see her as security asked him to leave because he was drinking.

Rihanna's father was thrown out of her Diamond Ball before the singer arrived because he was drinking.

Ronald - who Rihanna sent home from her US tour six years ago because of his drunken behaviour, sparking a two-year estrangement - said: "I had Johnny Walker Black. I had two doubles man and tripped over a chair.

"I had been on the [red] carpet for the pictures, I meet a couple of famous people I knew go and talked with them, and then somebody left a chair and I stepped back and fell over, I saw my ex [Monica Braithwaite, Rihanna's mother] look up, and within a few minutes after the picture was taken, security came up and said 'We're taking you home'.

"I said, 'But I haven't seen my daughter yet' and they said, 'Don't matter man. Please do not make a scene it will reflect on your daughter.' "

A year ago, Rihanna paid for Ronald to endure a month-long stay at a luxury rehab clinic in Malibu and he knows she will be disappointed in his behaviour.

He told the MailOnline website: "I'm sad how it ended of course, I should have never taken that first drink or any drink for that matter. I wish I had seen her of course.

"She will probably hear how I was and how I had a few drinks, so I guess she would be angry with me. I think she is, I'm not sure, we haven't spoken just yet.

"I feel bad because I let her down because she spend all that money putting me in rehab, [and] then find me drunk somewhere. It is not good. What can I say but I'm sorry. It's me who f**ed up."

Ronald explained he had turned to alcohol because he felt "down" that his daughter hadn't invited her half-brother and half-sister to the glitzy event, though other family members were there.

Despite the incident, Ronald - who has previously battled addiction to crack cocaine - insists he isn't an alcoholic.

He said: "Me, no, drunk and disorderly. I don't see myself as an alcoholic, I don't realise when I get that drunk.

"Call me a drunk or alcoholic in denial, whatever you want to call me but I have realised I could drink or not drink."

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