Radivoje Lajic first came to international attention in 2008, shortly after the fifth meteorite had crashed into the roof of his house in the northern village of Gornji Lajici.

And now, within the past month, another rock has hit the roof of his house, in defiance of all the odds - making it six strikes since the plague of meteorites began in 2007.

Experts at Belgrade University have confirmed that all the falling rocks he has handed over were meteorites. They are now trying to work out what exactly it is about his house that particularly attracts them. The strikes always happen when it is raining heavily, he says, never when there are clear skies.

Lajic has his own explanation, of course. After the fifth rock struck his house, he said: 'I am obviously being targeted by extraterrestrials. I don't know what I have done to annoy them but there is no other explanation that makes sense. The chance of being hit by a meteorite is so small that getting hit six times has to be deliberate.'

50-year-old Lajic has had a steel girder reinforced roof put on the house to protect it from the alien bombardment - which he funded by selling one of the meteorites to a university in the Netherlands.

'I have no doubt I am being targeted by aliens,' he adds. 'They are playing games with me. I don't know why they are doing this. When it rains I can't sleep for worrying about another strike.'