A collision between a speedboat carrying migrants and a Greek coast guard patrol vessel off the eastern Aegean island of Chios has killed at least 14 people, the coast guard said late Tuesday, while a search and rescue operation involving patrol boats, a helicopter and divers was underway for potentially missing people.

The coast guard said another 25 migrants, including about 11 children, were rescued and transported to a hospital on Chios, as were two coast guard officers who were injured in the incident. Of the 14 bodies collected, 11 were those of men and three were of women, the coast guard said.

It added that it was not immediately clear how many people had been on the speedboat, and a search and rescue operation involving four patrol vessels, an air force helicopter and a private boat carrying divers was underway for potentially missing passengers.