Four migrants from Venezuela - two men and two women - were found dead this week after they washed ashore on the Dutch Caribbean island of Curaçao.
Five survivors are in custody in Curacao for entering illegally, two of them in a hospital.
Separately, the president of the National Federal of Cattle Ranchers says at least two farms were attacked by mobs of people who slaughtered cows.
The overcrowded vessel sailed from San Jose de la Costa in the western Venezuelan state of Falcon before striking some rocks in the sea and sinking, naval officials said.
The four dead were identified as Venezuelan migrants deported from the island in December, said Rodrick Gouverneur, spokesman for the Dutch Caribbean Coast Guard.
By Kieran Gill for the Daily Mail
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Crews on Thursday searched for bodies, assuming there were more than six aboard the boat that broke into pieces, but found none.
It's a journey frequently taken by people fleeing Venezuela's economic collapse.
Luis Stefanelli, a member of Venezuela's congress, said passengers on the boat were all under age 35.
Venezuelan authorities allege the smuggling of products out of Venezuela to neighbouring countries is one of the causes of the severe shortage of food and other basic products that the South American country has been facing for several years.