Shortly before 11pm on Sunday, police struggled to detain an armed individual at a festival in Echternach, with two officers suffering injuries in the process.
Shortly before noon on Monday, an attempted break-in took place on Rue Clairefontaine in Diekirch, after which three out of four suspects are still on the run.
Aside from known classics, new stalls and attractions are regularly chosen to keep Luxembourg's biggest fair exciting with each new edition.
Iran on Monday denied any link with the attacker of British author Salman Rushdie but blamed the writer himself for "insulting" Islam in the novel "The Satanic Verses".