SHANGHAI - The three-day trial of four Rio Tinto executives concluded on Wednesday without a verdict, a lawyer said.

The trial wrapped up at Shanghai No 1 Intermediate People's Court at midday, and no date was set for the verdict, said Zhai Jian, an attorney representing one of the accused.

The four, including Australian national Stern Hu and his three Chinese colleagues - Liu Caikui, Ge Minqiang and Wang Yong - were charged with taking bribes of more than 86 million yuan ($12.6 million) and stealing commercial secrets.