Rohingya migrants bring back food supplies dropped by a Thai army helicopter after jumping to collect them at sea from a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. A boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

Rohingya and Bangladeshi migrants stand and sit on a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. The boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, according to an AFP reporter at the scene, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

Rohingya migrants swim to collect food supplies dropped by a Thai army helicopter after they jumped from a boat (R) drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. A boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

Rohingya migrants bring back food supplies dropped by a Thai army helicopter after jumping to collect them at sea from a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. A boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

Rohingya migrants collect food supplies dropped by a Thai army helicopter after jumping from a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. A boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

A Rohingya migrant eats food dropped by a Thai army helicopter after he jumped to collect the supplies at sea from a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. A boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

Rohingya migrants stand and sit on a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman sea on May 14, 2015. The boat crammed with scores of Rohingya migrants — including many young children — was found drifting in Thai waters on May 14, according to an AFP reporter at the scene, with passengers saying several people had died over the last few days. AFP PHOTO / Christophe ARCHAMBAULT

This picture taken on May 14, 2015 shows Rohingya migrants on a boat drifting in Thai waters off the southern island of Koh Lipe in the Andaman. Trafficking experts say Thailand is the centre of a multi-million-dollar trade run by competing transnational criminal syndicates. AFP PHOTO / Christophe ARCHAMBAULT