Russian Navy ships passing through the Bosphorus Strait may be attacked by ISIS terrorists, Haberturk newspaper reported Tuesday, citing a Turkish intelligence service.

Axar.az reports citing Sputnik news.

ISIS terrorists are allegedly planning to fire rockets at Russian ships, Haberturk reported.

Istanbul’s security services have stepped up protective measures and are currently monitoring 146 possible points from where the attacks could be carried out in the Bosphorus, according to the newspaper.

Security services will use helicopters and additional coast guard boats for escorting Russian ships through the strait.