A leading UFO expert has warned that aliens “don't come in peace” after spending 45 years investigating potential extraterrestrial sightings.

Malcolm Robinson has written 10 books on aliens and described what he thinks they look like.

One of the UK's leading extraterrestrial specialists, Robinson has researched dozens of alien incidents over the decades and claims they have carried out abductions.

Although many sightings are explainable, he says that there are also several incidents over the years that are still not fully understood.

And Robinson has warned that aliens “have an agenda”, although it is not yet clear what it is.

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