(VOVworld) – At least 16 people were injured in a Sunday explosion at a shopping mall in Bangkok, where anti-government protestors were gathering.

Thai police officers inspect the site of an explosion scene during an anti-government protest at Khao Saming district, Trat province on Sunday (Photo: Reuters)

The attack occurred one day after a gunfire and grenade attack in the eastern province of Trat which killed 2 people and wounded 41. This has been the most serious violence since the wave of protest against Prime Minister Yingluck’s administration began last November. The police and army are investigating the explosion.