`Harry Potter` stars pay tribute to Dave Legeno

London:`Harry Potter` stars Emma Watson and Tom Felton have paid tribute to co-star Dave Legeno following his death in California last week.Legeno, who starred in the last three instalments of the `Harry Potter` franchise as werewolf Fenrir Greyback, was found dead in a remote area of Death Valley, California by a pair of hikers. An official cause of death has yet to be released, but he is thought to have suffered from extreme heat-related issues. Watson, who played female lead Hermione Granger in the films, took to Twitter to pay tribute to the actor, writing, "I`m so sad to hear about #DaveLegeno. He was such a lovely man. I hope he is resting in peace." Felton, who played Draco Malfoy, added, "Gutted to hear the sad news about Dave Legeno. He was a true Big, Friendly, Gentleman. Was a pleasure every time we met #Bfg #DaveLegeno".