Anti-government protesters in Thailand are to take their grievances to the doors of the Senate as the body meets to discuss the political crisis in the country.

Over the weekend two opposition supporters were injured after grenades were fired by unknown assailants as they camped at Government House in Bangkok.

Last week a court dismissed Prime Minister Yingluck Shinawatra and several ministers for abuse of power, increasing tensions between pro-government “Red Shirts” and the anti-government “Yellow Shirts.”

After Yingluck was removed from office a caretaker government took control ahead of elections planned for July 20.

Those opposed to the government want an unelected “people’s council” to overhaul the political system before an election date is set.

Pro-government backers have accused the courts of bias and have threatened violence if the anti-government side gets its way.

Thai authorities have increased security in Bangkok as fears of fresh violence grows.