Jihadists 'mingled' among migrants, Hungary PM says after Paris attacks

Jihadists have exploited Europe's migrant crisis by hiding among asylum seekers, Hungarian Prime Minister Viktor Orban said Monday, in the wake of attacks in Paris that killed at least 129 people.

"In a deliberate and organised way, terrorists have exploited mass migration by mingling in the mass of people leaving their homes in the hope of a better life," Orban told lawmakers in an address titled "Attack on Europe".

His right-wing government has taken a hard line against migrants, sealing the country's southern borders with razor-wire fence and repeatedly claiming that the influx of mostly Muslim refugees threatened the continent's Christian identity.

Orban slammed the European Union for being "adrift, weak and incompetent", saying top officials should have done more to prevent the attacks in the French capital.

"The right to self defence is stronger than any other, we should not put European lives at risk on the basis of any kind of ideology or economic arguments," Orban said.

"Those who said yes to immigration, who transported immigrants from warzones, those people did not do everything for the defence of European people."

Brussels had invited "unchecked" hundreds of thousands of people from warzones into Europe, Orban said.

"We don't think that everyone is a terrorist but no one can say how many terrorists have arrived already, how many are coming day by day," he said.