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Billionaire Donald Trump appeared to be the victim of Twitter trolls today after a picture of Fred and Rose West was re-tweeted on his official account.

He retweeted a picture of the notorious serial killers to his 2.7million followers, after receiving a tweet from another user saying: "My parents who passed away always said you were big inspiration.Can you pls RT for their memory?"

The gaffe was re-tweeted thousands of times before the post was removed from his page.

I thought I was being nice to somebody re their parents. I guess this teaches you not to be nice or trusting. Sad! — Donald J. Trump (@realDonaldTrump) September 29, 2014

It sparked a flurry of activity on the micro blogging site, with users sending him pictures of famous villains in the hope he would re-tweet them.

Ghenghis Khan, Darth Vader and Hitler were among images sent to the tycoon.

He later wrote: "I thought I was being nice to somebody re their parents. I guess this teaches you not to be nice or trusting. Sad!"