As the Chinese president Xi Jinping awaits for his visit to the Czech Republic, the Chinese flags have been defaced.
The police have said that the numerous flags that were hanging in the capital Prague were spattered with a black substance at night.
The Chinese president will visit on Monday where he will stay for two days after which he will go to the U.S. to hold talks on nuclear matters.
It is expected that protests will be staged by Czech demonstrators who do not agree with policies that China has in Tibet.
A giant photo of the exiled Tibetan spiritual leader will also be hanged near the airport close to the portrait of the former President Vaclav Havel, who is a former dissent and activist for human rights.
Rights groups have accused China of suppressing Tibetan culture and freedom of expression.
Chinese government has said that the development of the Tibet economy is much attributed to its rule.