Syrian refugees in Serbia have condemned the attacks in Paris, saying the motives of gunmen and suicide bombers does not represent real Islam.

Thousands of migrants, many from Syria, are continuing their journey across Balkans on 14 November, whilst European countries tighten security measures following the deadly attack in Paris.

Islamic State has claimed responsibility for a coordinated assault by gunmen and bombers that killed 127 people at locations across Paris, that President François Hollande said amounted to an act of war against France.

The latest attacks have increased fears amongst many of the refugees arriving in Europe, many fleeing from Islamic State in Iraq and Syria themselves, that more borders will shut and that they will not be welcomed so readily by European governments and communities.

Poland's European Affairs Minister designate Konrad Szymanski said the country will not longer accept migrants and refugees assigned to it under European Union (EU) quotas after the attacks in Paris, in a sign that the terrorists' actions may seriously undermine the EU's refugee policy.

However, Syrian refugees waiting to be registered at a migrant centre in the Serbian town of Presevo on the Macedonian border condemned the attacks in Paris, saying the assailants were not representative of Islam.

"They need to show to people that this (here) is Islam. This is not Islam, they are not Islam and they don't know God, never, believe me," said Bushar, a refugee from the war-torn Syrian town of Aleppo. "We've seen the war in Syria before, and terrorists, different stupid people who do that, and even in Paris, or Syria, or America, or Germany, anywhere, they are not allowed to do that. God didn't say in Islam to kill people. That's not Islam, not our Islam."

Mohd Zahed, who fled from Aleppo with his wife and two children, hopes that his family will not have problems settling in Europe because of the attack in Paris.

"I'm with my wife, my daughter, my son and the sister of my wife. We are not afraid because we are not doing this one [Paris attack], because Muslim people don't do this one. Those who do this one are terrorists, and we are not. If we were terrorists we wouldn't come this way. We would 'jump' by airplane or by ship, but we are coming this way because we are not like them," he argued.

France is host to the largest Muslim population in Europe and has been taking many thousands of migrants in the latest crisis.

The assaults came as France, a founder member of the US-led coalition waging air strikes against Islamic State in Syria and Iraq, was on high alert for terrorist attacks.

It is worst terrorist attack in Europe since the Madrid train bombings of 2004, in which 191 died.