BANGKOK (AP) — Investigators say they plan to file murder charges against Thailand’s former prime minister and his deputy in the first prosecutions of officials for their roles in a deadly 2010 crackdown on anti-government protests.

The protests and crackdown left more than 90 people dead and about 1,800 injured in Thailand’s worst political violence in decades. Former Prime Minister Abhisit Vejjajiva’s Democrat Party, now in the opposition after being ousted in elections last year, and “red shirt” supporters of the ruling Pheu Thai Party have blamed each other for the bloodshed since.