Well known and well documented. Read the book "Red Horizons" by Lt. General Ion Mihai Pacepa. As Deputy Chief of Romanian Intelligence he supervised recordings of Arafat when he visited Bucharest. These recordings were made in Arafat's hotel as he had anal sex with members of his staff. He was a "top" by the way. Everyone knows Arafat was gay. This author has no idea what he is talking about.
Aden hotel used by Yemen goverment hit by grenade (Reuters)
from the article: Probe into Arafat's death could open a bigger Palestinian can of worms