The Criminal Court yesterday threw out a case against three people charged in connection with the death of Gen Romklao Thuwatham, who was killed during the political unrest in 2010.
The lawsuit, co-filed by Nicha Hirunburana Thuwatham, the widow of Gen Romklao, alleged that Suksek Pholteu, Pornkamol Buachatkhao, and Surachai Thewarat colluded in his death, encouraged others to commit a crime and violated firearms laws.
Romklao: Killed in grenade blast
The court had been told Mr Suksek and Mr Surachai each had in their possession three M67 grenades which were allegedly used in the April 10, 2010 clash between red-shirt demonstrators and troops.
Ms Pornkamol was said to have provided the funds to buy the grenades, two of which were thrown at the troops outside Satri Witthaya School.
Five soldiers were killed, including Gen Romklao, and several others wounded.
In dismissing the lawsuit, the court said it found the evidence and witnesses presented by the prosecutors not credible and inadequate.
Gen Romklao was serving as deputy chief of staff of the 2nd Infantry Division of the Royal Guards when he was dispatched to disperse the demonstrators, who held months-long rally to oust the Abhisit government.
He was promoted posthumously to the rank of general following his death.