A boat carrying migrants arrives in Dikili, a Turkish coastal town, on April 4, 2016.
Around 130 migrants — mostly from Pakistan and Bangladesh — boarded two ferries at dawn from the Greek island of Lesbos and traveled to Dikili, according to NBC's U.K. partner ITV News, as part of a contentious plan shrouded in protests.
Migrants are escorted by Turkish police and local officials as they arrive by ferry at the Dikili harbor in Izmir, Turkey.
Migrants sit on a bus before boarding a Turkish-flagged passenger boat to be returned to Turkey, on the Greek island of Lesbos.
A female border agency officer takes a picture as migrants board a boat to be returned to Turkey.
Under the deal, Turkey agreed to take back migrants that had made it to Europe from its shores. In exchange, the EU agreed to settle thousands of Syrians already in Turkey — one for each Syrian Turkey takes back from the Greek Islands.
A banner reading 'Turkey is not Safe' hangs from a hotel as migrants are escorted by EU border agency officers to ferries in Mytilene, on the Greek island of Lesbos.
A migrant is escorted by EU border agency officials as he embarks on a Turkish catamaran to be sent back to Turkey.
A migrant, center in back, is escorted by an EU border agency officer into a ferry, in Mytilene on the Greek island of Lesbos.
The European Union's deal with Turkey has been condemned as illogical, if not illegal, by rights groups since its inception. The United Nations has warned the agreement lacks legal safeguards and Amnesty International called it "alarmingly short-sighted and inhumane."
A Turkish officer registers a deported migrant from Greece after arrival at Dikili in Izmir, Turkey.
A Greek ferry carrying migrants arrives at Dikili.
Activists hold banners as they protest against the return of migrants to Turkey, in Mytilene on the Greek island of Lesbos.