Yes indeed, along with the Deputy PM Suthep. Both were exonerated. Interesting to note - is Abhisit also a Britsh citizen??
From Wikipedia:
Abhisit Vejjajiva is a Thai politician who was the prime minister of Thailand from 2008 to 2011. He was the leader of the Democrat Party from 2005 until he resigned following the party's weak performance in the 2019 election. Wikipedia
Born: August 3, 1964 (age 58 years), Wallsend, United Kingdom
Party: Democrat Party
Education: University of Oxford, Eton College, Nuffield College, Ramkhamhaeng John's College University,