Islamic State (IS) fighters are being smuggled into Europe by gangs in the Mediterranean, an adviser to the Libyan government has told the BBC.
Abdul Basit Haroun said smugglers were hiding IS militants on boats filled with migrants.
Officials in Italy and Egypt have previously warned that IS militants could reach Europe by migrant boat.
However, experts have cautioned that it is very difficult to verify or assess such claims.
Mr Haroun based his claim on conversations with smugglers in parts of North Africa controlled by the militants.
He alleged that IS was allowing the boat owners to continue their operations in exchange for half of their income.
The UN estimates that 60,000 people have already tried to cross the Mediterranean this year.
More than 1,800 people are feared to have died making the journey in often overcrowded and unseaworthy boats in 2015 – a 20-fold increase on the same period in 2014.
In an interview with BBC Radio 5 live Investigates, Mr Haroun said IS used the boats “for their people who they want to send to Europe, as the European police don’t know who is from IS and who is a normal refugee or not”.
These militants often sat separately from the other migrants, he said.
2014 – Migrants in numbers
- At least 218,000 reached Europe by the Mediterranean Sea
- Italy received more than 140,000 of the arrivals
- 3,500 people died attempting the journey – compared with just over 600 in 2013
Source: The UN refugee agency
Earlier this year, the EU’s border control agency, Frontex, warned that it was “possible” that foreign fighters were using irregular migration routes to get into Europe.
Egypt’s ambassador to the UK has warned of “boats full of terrorists” if the international community does not act, while the Italian government has expressed fears of militants infiltrating the boats, while emphasising that the boats are a humanitarian crisis.
However, experts have cautioned that both countries have an interest in influencing the international response to the Libya crisis, and that it is difficult to verify the threat without evidence.
“Egypt is particularly keen to amplify the threat of Islamic State in Libya as it is desperately seeking approval for international intervention in the country,” Alison Pargeter, an analyst focusing on Libya for the Royal United Services Institute, a British defence think tank, told the BBC earlier this year.
Meanwhile, Christian Kaunert, an expert in terrorism and refugee issues at Dundee University, said the risk of militants infiltrating migrant boats was “plausible – but whether it’s absolutely credible is difficult to assess because by definition, when those boats come in, they go unnoticed”.
IS, which controls large parts of Iraq and Syria, has been active in recent months in Libya, exploiting a power struggle between rival groups after the fall of Col Muammar Gaddafi.
