Two explosions shook an anti-government demonstration site in Thailand's capital on Sunday, wounding at least 28 people. Police said the blasts near Victory Monument, in the north of the city, were caused by fragmentation grenades. Witnesses said the explosions occurred about two minutes apart. The first blast went off about 100-200 meters (yards) from a stage set up by protesters, leaving a small crater beside a small shop. The second went off near a row of vendors selling anti-government T-shirts in the street, leaving bloody clothes and a ripped white-and-blue plastic tarp scattered across the ground, AP reported.