The Bangkok South Criminal Court on Friday handed down its ruling on the inquests of three red-shirt demonstrators found dead near a military base at Lumpini Park during the 2010 protests.
The court identified the types of bullets that killed the victims on May 14 and the locations where the weapons were fired from. However, it had no evidence to conclude who pulled the triggers.
Piyapong Kittiwong and Prachuab Silarak were shot dead in the park while Somsak Silarak was killed near the statue of King Rama VI.
According to the ruling, soldiers from the 23rd Tank Battalion (Royal Guard) were ordered to stand guard in Lumpini Park as well as an area near Lumpini Police Station to keep order during the United Front for Democracy against Dictatorship's protest against the then Abhisit Vejjajiva government.
Somsak had been hit by a .223 calibre bullet fired from in front of King Rama VI's statue. The same type of bullet also killed Piyapong while an unidentified bullet fired from Witthayu or Rama IV roads killed Prachuab.