Eddy Merckx got to know Robin Williams through Lance Armstrong and had built up a friendship with the actor over the years.
Speaking on VRT Radio 1's news and current affairs programme 'De Ochtend', the cycling legend said "He was a big cycling fan and that's how I got to know him."
"I am shocked at Robin Williams' death. I found him to be a very pleasant person. He was a big fan of Lance Armstrong and I got to know him at the Tour de France.
"On my 60th birthday he gave me the script for the film "Insomnia". I didn't really know him that well, but he was a very nice person to spend an evening with."
"He had a great sense of humour and he was a cycling fanatic. He was above all a big friend of Lance Armstrong, but he knew me and what I had won. If you are a cycling fanatic then you've heard of Merckx. I've cycled with him a few times over in America", Eddy Merckx added.