ATHENS, Greece, Feb 4, (AP): Greek coast guard patrol boats and a helicopter were searching for potential missing people off an eastern Aegean island Wednesday after an overnight collision between a patrol vessel and a speedboat carrying migrants that left at least 15 people dead. Twenty-four migrants, including 11 children, were injured and were hospitalized on the island of Chios following the collision late Tuesday night.

Two coast guard officers were also injured, with one remaining hospitalized Wednesday, the coast guard said. The bodies of 11 men and three women were recovered from the sea shortly after the collision and one woman died later in a hospital, authorities said. The number of people who had been on the speedboat was not clear.

Four patrol boats, two helicopters and divers began the search overnight, which continued Wednesday morning with a helicopter and five patrol vessels. Details of exactly what happened were unclear. According to a coast guard statement Wednesday, one of its patrol boats came across the speedboat late Tuesday night making its way towards Chios without its navigation lights on.

The speedboat refused to stop despite sound and visual signals by the patrol boat crew and changed direction, colliding with the patrol boat and capsizing, the statement said. Photos posted by the coast guard showed signs of abrasion on the patrol boat's right side. The coast guard’s account could not be independently verified.

Michalis Giannakos, the head of Greece’s public hospital workers’ union, said Tuesday night that staff at the hospital in Chios were placed on alert overnight to handle the sudden influx of injured and dead. Speaking on Greece’s Open TV channel, Giannakos said several of the injured required surgery. Greece is a major entry point into the European Union for people fleeing conflict and poverty in the Middle East, Africa and Asia.