The Spanish website sur.es claims sources said the three found dead were a couple and their daughter, aged about 20-years-old.
ITV News cannot independently verify this information.
More top news
The study reveals cases of slave driving and human trafficking suffering delays, being prematurely shelved or being overlooked entirely.
David Clarke was arrested after a four-hour standoff in which two members of staff were taken hostage. Both escaped unharmed.
New York's attorney general launched the civil rights investigation after dozens of women accused Harvey Weinstein of sexual harassment.