Chinese Premier Li Keqiang on Sunday rejected the accusation of hacker attacks against the United States, calling it "presumption of guilt."

Premier Li said hacker attacks in the cyber space is a worldwide problem and China itself is one of the major targets of hacker attacks.

"China does not support but indeed oppose such attacks," he said at a press conference in Beijing.

Li made the remark in response to a question at the press conference held after the annual session of China's top legislature closed on Sunday morning. [More about the press conference]

"We should not make groundless accusations against each other and spend more time doing practical things that will contribute to cyber security," Li said.