The number of people injured in a lightning storm at a German rock music festival has risen from 42 to 51, police said Saturday, as weather woes continued to bedevil Germany.

Fifteen of the victims are listed in serious condition and two were successfully revived, a police spokesman said.

Live music performances were suspended for about 90 minutes late Friday while rescue teams dealt with the injured at the Rock am Ring festival at the former Mendig airbase west of Koblenz.

The festival resumed later with about 90,000 fans in attendance.

Headlining bands include Red Hot Chili Peppers and Black Sabbath.

Last year's festival was also affected by a lightning storm, in which 33 people sustained injuries.

Elsewhere on Saturday, residents were finally allowed to return to the homes they had been evacuated from in the south-western town of Schwaebisch Gmuend following a landslide.

Municipal authorities said a geologist had examined the affected area by helicopter and declared it safe.

Floods in other parts of Germany - which have killed at least seven people in recent days - brought out so many volunteers offering to help that traffic jams ensued.

Police in the lower Bavarian town of Simbach am Inn said they did not need any more help on Saturday as there was nowhere left to park and those arriving could not get to the flooded areas.

Simbach Mayor Klaus Schmid said, "They need two more hours than usual. Helper who are en route should turn back."

One thousand volunteers had turned out to help with the Simbach flood operation on Friday, with an even higher number arriving on Saturday.

The German Weather Service issued further storm warnings for the south-west of Germany on Saturday as a result of cyclone Frederike. A weak air stream means the cyclone's storms are moving very slowly across the region.

The storm cell's sluggishness results in large amounts of precipitation over a particular area, or several storms pass over the same place, meteorologist Christian Herold told dpa.

Rain and hailstorms were expected to continue into Sunday in the south-west.

Meanwhile in the north of the country the sun was shining and summer temperatures of up to 28 degrees Celsius were expected to continue all weekend.

The weather service forecast a break in the weather for the start of the new week.

Latest news

Syrian opposition rules out future role for President al-Assad

The Syrian opposition said Friday it would not accept any role for President Bashar al-Assad in the future of the war-torn country, reacting to a recent US shift saying that removing al-Assad is no longer a priority for Washington.

Russian Army integrates breakaway forces of Georgian province

Parts of the small fighting forces of the Georgian breakaway province of South Ossetia have been placed under Russian military control, Russian Defence Minister Sergei Shoigu said on Friday.

Czech Republic's Pilsner Urquell beer is now Japanese

Japanese brewing company Asahi completed its takeover of the Czech brewery Pilsner Urquell on Friday, Asahi said in a statement.

Judge approves 25-million-dollar settlement of Trump University case

A US district judge on Friday approved a 25-million-dollar settlement of lawsuits and state fraud allegations against Trump University, the US president's now-defunct business venture.

Former Thai premier Thaksin to junta on reconciliation: 'Cut me out'

Former Thai prime minister Thaksin Shinawatra on Friday announced that he is not interested in the junta-led reconciliation process, three days after the junta handed him a half-a-billion-dollar tax bill for his past business deal.

Dalic: We welcome possible deal between Agrokor and banks

The government welcomes the possibility of an agreement being concluded between the Agrokor food company and creditor banks, and the bill on vitally important companies is not a fallback plan but the result of the government's care for the overall economic and financial stability of Croatia, Deputy Prime Minister and Minister of Economy Martina Dalic told a press conference in Zagreb on Friday.

Croatia, China sign action plan for cooperation in agriculture

The Croatian and Chinese ministries of agriculture on Friday signed an action plan for cooperation in the field of agriculture for the period 2017-2018, the Croatian ministry said in a statement.

ZSE indices up, Agrokor shares in focus of investor interest

The Zagreb Stock Exchange (ZSE) indices on Friday rose by more than 1.8%, with stocks of the Agrokor food and retail concern being in the focus of investor interest again.

Berlin police defend handling of Berlin market attacker

Berlin police defended themselves on Friday against accusations that they stopped surveillance on Berlin Christmas market attacker despite knowing in June 2016 he was dangerous.

Croatia, creditors tailor emergency measures to save tottering giant

Croatia's tottering retail and food giant Agrokor reached an agreement with its creditors, putting its debts standby and allowing it to continue working during emergency restructuring, the Croatian branch of Austria's Erste Bank said Friday.

Agrokor's creditors say standstill agreement to go into force today

A standstill agreement regarding the Agrokor concern's existing financial obligations to banks will take effect on Friday, additional capital will be injected into the concern in the coming days and the concern will be actively restructured, which includes a change of its management, it was said on Friday after a meeting between Agrokor's suppliers and creditor banks.

Palestinians, UN slam Israel's new settlement plan

Palestinians, Israeli activists and the UN lambasted the government of Israeli Prime Minister Benjamin Netanyahu on Friday, a day after it gave the go-ahead for the first new West Bank settlement in a quarter of a century.

South Sudan rebels release three abducted foreign oil workers

South Sudanese rebels have released three foreign engineers they abducted in early March in the oil-rich Upper Nile region, Foreign Affairs Ministry official Mawein Makol Arik said on Friday.

Turkish opposition: Imprisoned party chief has gone on hunger strike

The head of Turkey's pro-Kurdish opposition party has launched a hunger strike from prison.

European leagues threaten Champions League schedule clashes

The European Professional Football Leagues (EPFL) on Friday threatened schedule clashes on Champions League matchdays in an ongoing dispute with the governing body UEFA.

Danish court revokes citizenship of IS volunteer

A Danish appellate court on Friday stripped a man of his Danish citizenship for volunteering to fight for the extremist Islamic State in Syria.

Banks and Agrokor agree on key elements of standstill agreement

Member banks of the coordinating committee of financial creditors and representatives of the Agrokor food company have in principle agreed on key elements of a standstill agreement, which is expected to be signed later today, announcing changes in the company's management team, Erste Bank said in a statement on Friday afternoon.

Syrian man on trial in Sweden; mosque attack labelled terrorism

A Syrian man went on trial Friday in the southern Swedish city of Malmo, charged with terrorism and arson after an attack last year on a building used as an assembly hall by Shiite Muslims.