(Reuters) - Canada's Aurora Cannabis Inc (>> Aurora Cannabis Inc) said on Monday it increased its stake in Australia-based Cann Group Ltd (>> Cann Group Ltd) to 22.9 percent from 19.9 percent, its latest move to expand in the cannabis industry.

Aurora, already Cann Group's largest shareholder, said it bought the shares at A$2.50 ($1.90) apiece.

Shares of Cann Group ended 4.7 percent higher at A$3.14 on the Australian Stock Exchange on Monday.

Cann Group was the first Australian company to receive a license to research and cultivate cannabis for medical purposes.

Aurora will also invest C$12 million ($9.4 million) in Canadian biotechnology company Radient Technologies Inc . The investment will increase Aurora's stake in Radient to 19.18 percent from 8.8 percent.

The investments come as Aurora - one of Canada's biggest cannabis makers - looks to expand ahead of expectations that Canada will legalize the production, sale and consumption of recreational marijuana.

Aurora is also trying to buy medical marijuana company CanniMed Therapeutics Inc (>> CanniMed Therapeutics Inc), which last week adopted a "poison pill" plan to prevent a takeover.

Radient's stock rose nearly 10 percent on Monday on the TSX Venture Exchange.

(Reporting by Yashaswini Swamynathan and Taenaz Shakir in Bengaluru; editing by Sai Sachin Ravikumar)