New Delhi, April 29 -- Guyana complained to Caribbean leaders on Tuesday after Venezuela's acting President Delcy Rodriguez wore a controversial pin during official visits depicting the map of Guyana's western region that Venezuela has long claimed as its own.

The pin, which Rodriguez wore on her attire, is in the shape of Guyana's resources-rich Essequibo region that makes up two-thirds of its territory that's at the heart of a centuries-old territorial dispute with Venezuela, which neighbors Guyana to west.

The pin has been increasingly worn by Venezuelan government officials, state television anchors, lawmakers and members of the ruling party following the U.S. capture of Nicolas Maduro in a stunning nighttime raid on his residence i...