More than 70 people have been injured after lightning struck a rock festival in Germany for the second year running.

At least 42 fans were hospitalised on Friday evening, including at least two people who had to be resuscitated by paramedics, although none were in a life-threatening condition.

One man was seen lying in the mud with what appeared to be burn holes and scorch marks on his jeans as he was surrounded by emergency services.

People reassemble a tent after the venue of the festival 'Rock am Ring' was hit by a storm in Mendig, Germany, 03 June 2016 (EPA)

Organisers warned thousands of people attending Rock am Ring to seek shelter as a severe thunderstorm moved in shortly after 8pm (7pm BST).

Police said that lighting hit at around 8.30pm, injuring “many” people at the site, causing firefighters and ambulances to be sent to the scene as an emergency information hotline was set up.

Local media reports said up to 71 people had been injured, while Rock am Ring organisers said 42 people had been taken to hospital, including eight with serious injuries.

The festival’s live performances were stopped for around one-and-a-half hours as 90,000 fans remained gathered at the former airfield, where acts including Tenacious D, Panic! At The Disco, The 1975 and Major Lazer were due to be performing on Friday night.

Rock fans from walk across the muddy camping area at the music festival 'Rock am Ring' in Mendig, Germany, 3 June 2016. (EPA)

Last year, at least 33 people were injured when lightning struck the festival twice in Mendig, western Germany.

Tens of thousands of rock fans attend the annual event, where the Red Hot Chili Peppers and Black Sabbath were due to perform.

But concern over continuing severe weather caused authorities to order the festival be suspended on Saturday afternoon, with organisers saying there were fears of injuries in further lightning strikes.

"Please stay in your tents or for your own protection go to your cars," said a message issued on social media.

“It's not about causing panic but giving people the feeling that someone is looking after them,” said Marek Lieberberg, head of the organisers.

In pictures: France flooding Show all 10 1 /10 In pictures: France flooding In pictures: France flooding Firefighters help a woman to disembark a boat as the city is flooded due to heavy rainfalls at Montargis Getty In pictures: France flooding The Eiffel Tower facing the flooded Seine river in Paris Getty In pictures: France flooding Firefighters walk with their boat in a flooded street in Montargis Getty In pictures: France flooding A replica of the Statue of Liberty facing the flooded Seine river in Paris Getty In pictures: France flooding The flooded Vert Galant park is pictured from the Pont Neuf bridge after the banks of the river Seine became flooded following heavy rainfalls in Paris Getty In pictures: France flooding A flooded street of Montargis, south of Paris Getty In pictures: France flooding Two women enter their flooded home as they float on an inflatable raft in Montargis Getty In pictures: France flooding A man holds his inflatable raft in a flooded street in Montargis Getty In pictures: France flooding A flooded area in front of the Chateau de Chambord (the Castle of Chambord) in Chambord Getty In pictures: France flooding The Zouave statue of the Alma bridge just near the Eiffel Tower, flooded by the river Seine after its banks became flooded following heavy rainfalls in Paris Getty

Thunderstorms are forecast to continue in the region over the coming days amid a spell of severe weather in Europe that has led to the deaths of at least 16 people.

In Paris, the River Seine has surged to its highest level in almost 35 years, causing museums, parks and cemeteries to be shut down as the French capital prepared for possible evacuations.

At least 11 people have died in Germany, including a 72-year-old man who died of a heart attack after being rescued from a raging stream in the village of Triftern.