Group of over 100 migrants stranded by human smugglers on island by Puerto Rico

Group including children and pregnant women became stranded while piled in yolas, rickety homemade boats smugglers use

US authorities are trying to rescue more than 100 migrants stranded on an uninhabited island near Puerto Rico during a human smuggling operation.

The nationality of the migrants awaiting help on Mona Island wasn't immediately known, although officials believe the majority are Haitian, said Jeffrey Quinones, spokesman for US Customs and Border Protection in Puerto Rico.