The Red-Shirts' accepted Prime Minister Abhisit's offer to dissolve parliament and hold a November election, but demanded that Deputy Prime Minister Suthep Thaugsuban to
face criminal charges for his
role in the April 10 crackdown.   Abhisit rejected the Red-Shirts' demand, rescinded the offer of a November election and announced that his government will expel the Red-Shirts from their encampment in the business district in Bangkok.  The Red-Shirts have called for reinforcements.

According to Voice of America, the government crackdown has begun with the shooting of a Thai general who is supportive of the Red-Shirts in their encampment.

Other reporting: Christian Science Monitor, BBC, Times, Al Jazeera, New York Times.  I would have included the Bangkok Post, but I couldn't get to their articles for some unknown reason.