
Kung Fu and Kill Bill star; Carradine, 72, was found half-naked in the wardrobe with a curtain cord around his neck, in a five-star hotel in Bangkok on Thursday morning.
Carradine was in Bangkok to shoot a film, "Stretch".
He and film crew checked in at the hotel on June 2. He missed a dinner with the crew on Wednesday only to be found dead on Thursday by a housekeeper.
Thai police said he may have committed suicide.
"There is no trace of fighting in the hotel room and the room was locked from inside. There is no sign of bruising on his body," police said.
Police said they were investigating from where he obtained the rope because it seems it was not from the hotel.
However, his representative in Los Angeles disputed police and media reports that speculated his death may have been a suicide, saying that neither they nor his family believed Carradine was capable of killing himself.
"His family is in shock," said Tiffany Smith of Carradine's management firm, Binder & Associates. "They have the same belief we have. There was no way David did this to himself."
Meanwhile Carradine's personal manager, Chuck Binder said his death was "accidental". Binder said the news was shocking.
"We can confirm 100 per cent that he never would have committed suicide," he said.
Adding that the 72-year-old star had been "full of life," Binder said Carradine "was a wonderful person, an amazing actor, a great friend. Anyone who had ever worked with him wanted to work with him again. He was a very likeable man."