Ten missing and 17 detained by US after boat capsizes in Puerto Rico

Incident is latest calamity as migrants from Dominican Republic and Haiti increasingly try to cross treacherous smuggling route

Federal authorities detained 17 Dominican migrants on Friday after their boat capsized near Puerto Rico's north-west coast in the pre-dawn hours, with the US Coast Guard searching for an estimated 10 others still missing.

Jeffrey Quinones, a Customs and Border Protection spokesman, told the Associated Press that those detained told officials that a total of 27 people were onboard the boat that struck a rock and turned over near Shacks Beach in Isabela.