Thailand's Constitutional Court on Wednesday dealt a decisive blow to Prime Minster Yingluck Shinawatra, ordering her to step down for abuse of power.
The court found Yingluck guilty of violating the nation's constitution when she transferred the National Security Council chief to another position back in 2011.
The prime minister appeared in court Tuesday to defend her actions, rejecting the notion that her party had benefited in any way from the move.
Cabinet members involved in the transfer were also ordered out of their posts.
It is unclear whether one of Yingluck's ministers will be allowed to assume the post, or whether Thailand will face a power vacuum.
The verdict is likely to stir up more unrest in the nation amid Prime Minister Yingluck's supporters.
It follows six months of anti-government demonstrations that have paralyzed the government.