Twitter user trumps Donald

Donald Trump inadvertently tweeted an image of serial killers Fred and Rose West following a Twitter prank.

A Twitter user sent a message to the billionaire saying: “My parents who passed away said you were a big inspiration. Can you please retweet [the message and image] for their memory?”

The user attached the photo of the notorious killers, which Trump retweeted to more than 2m followers.

Within minutes, the post had been mentioned hundreds of times, with some horrified users pointing out that he had been trolled.

Fred West killed at least 12 women and girls between 1967 and 1987, including family members.

His wife Rose took part in the majority of the killings.

Fred took his life while awaiting trial in 1995, while Rose is currently serving a life sentence.