Iran has asked Austria's government to take immediate measures to protect the cyber security of nuclear talks, media reported Saturday after reports emerged of suspected espionage at negotiation venues.

Swiss and Austrian authorities said on Thursday they had opened separate investigations into alleged spying in hotels where the nuclear talks with Iran are taking place.

The OSCE looks set to name an Austrian diplomat to replace Switzerland's Heidi Tagliavini as the security body's representative in peace talks over Ukraine, diplomats and press reports said Friday.

Envoys at Organization for Security and Co-operation in Europe headquarters in Vienna said that Martin Sajdik, currently Austria's ambassador to the United Nations, was in the frame for the job.

Swiss and Austrian investigators have launched probes into alleged spying in hotels hosting delicate Iranian nuclear talks, with Israel denying Thursday its secret services were involved.

The revelation comes in run-up to a June 30 deadline for a historic agreement between Iran and world powers on curtailing Tehran's nuclear program in return for relief from punishing sanctions, and a day after a Russian-based security firm said a computer worm widely linked to Israel was used to spy on the negotiations.

A 14-year-old Austrian schoolboy was convicted Tuesday of planning to bomb a Vienna train station in the name of the Islamic State group and sentenced to eight months behind bars.

The teenager of Turkish origin was found guilty of belonging to a "terrorist" organization and given an additional suspended jail sentence of 16 months by a court in his hometown of Sankt-Poelten.

A 15-year-old Austrian schoolboy with alleged ties to Islamist extremists and accused of intending to launch a bomb attack in Vienna last year will be tried on May 26, officials said Monday.

Mertkan G. was arrested in October 2014 when he was 14 and allegedly had contacts with supporters of the jihadist group Islamic State and al-Qaida, a court in his hometown Sankt-Poelten where he will be tried said.

An Austrian teenager suspected of having links with the Islamic State group is to appear in court Tuesday accused of planning to bomb a Vienna train station when he was just 14.

Now aged 15, the boy who comes from a Turkish background, is accused of "participating in a terrorist group." His case will be heard at a Sankt-Polten court, west of the capital.

The Red Cross on Friday strongly criticized the Austrian government over its decision to set up tent camps for asylum seekers in response to the rapidly growing influx of refugees.

"For us this is the worst possible solution," said the general secretary of the Austrian Red Cross, Werner Kerschbaum, ahead of a crisis summit in Vienna.

Two local trains collided head-on in Austria on Wednesday, killing one of the drivers and leaving 10 people seriously hurt including a woman in critical condition, emergency services said.

"In total 10 people were seriously injured," a fire brigade spokesman told Agence France Presse after the accident near the southern Austrian city of Graz.

Austrian Chancellor Werner Faymann on Monday called for an EU-wide quota to help accommodate the thousands of refugees reaching Europe's southern shores by boat and prevent further deaths.

He said the influx of migrants should not be borne alone by the countries where they first arrive -- Italy and Malta -- but equally distributed across EU member states.

Turkish President Recep Tayyip Erdogan on Saturday lashed out at the European Union and world leaders who have recognized the 1915 massacres of Armenians as genocide on the centenary of the events. 

Erdogan accused the leaders of France, Germany and Russia of "supporting claims based on Armenian lies" after they described the slaughter of an estimated 1.5 million Armenians by Ottoman forces as genocide -- which Turkey strongly objects to.