Munich's Oktoberfest, the world's biggest beer festival, opened Saturday under heightened security following a string of attacks in Germany attributed to jihadists. "We will make the Oktoberfest as safe as possible," Munich mayor Dieter Reiter pledged ahead of the 189th edition of the event, which runs until October 6. Billed as the world's biggest folk culture festival, the Oktoberfest last year drew more than seven million visitors who consumed a total of 6.

5 million litres of beer. The tighter police security this year comes after a spate of extremist attacks, including a deadly knife rampage in the city of Solingen last month. Police arrested a Syrian man who had allegedly claimed allegiance to the Islamic State group ahead of the attack that killed three people and wounded eight more.

And earlier this month, Munich police shot dead a man after he opened fire on them and at the city's Israeli consulate in what was being treated as a suspected terrorist attack. Munich police director Christian Huber reassured guests making their way to the Bavarian state capital that the Oktoberfest was the "safest festival in Germany, if not worldwide". The general threat level was heightened but there were no indications that the Munich festival was being targeted, Huber said Wednesday.

As well as 600 police officers, the city will deploy another 1,500 security guards to guide visitors swiftly through entry controls. The authorities will install metal detectors around the festival for th.