According to a german article from turkishpress.de from August 7 2009 (our translation):
Close to Izmir, 47 illegalised refugees were arrested by the turkish gendarmerie. After their identities were checked, the 37 Palestinians, 3 Afghanis and 7 refugees from Burma said that they had been brought to a strip of coast unknown to them from Istanbul by bus. They were then brought, by two turkish men, to Lesvos with a boat. Afterwards, greek security forces apprehended them. They were robbed of their passports and money, said the refugees.
Afterwards, a Palestinian told under tears, they were brought on two ships of the coastguard. They drove into the sea. Shortly before reaching the waters of Turkey, as the turkish authorities found out, they were told to swim the rest of the distance to the turkish coast.