a number of pages , written in arabic , have reportedly been found on the social media site targeting refugees fleeing war and poverty .
they are said to be advertising ` reliable ' and ` comfortable ' travel to europe on overcrowded vessels for around $ 1,000 per person .
the discovery comes after the deaths of some 1,700 refugees in the last week alone .
eu leaders have now agreed a package of measures to tackle the escalating crisis in the mediterranean .