The Criminal Court on Monday sentenced four defendants to imprisonment and acquitted another for lack of evidence, for the bombing of the offices of the Bhumjaithai Party in 2010.
The suspects in the trial were Dejpol Puthajong, Kampol Khamkhong, Kobchai Boonplod, Suriya Phumwong and Varisriya Boonsom.
The prosecution told the court that on June 22, 2010 the five defendants and Anek Singkhunthod, who was convicted in a separate case, hid a bomb in a fruit vending pushcart that exploded outside the offices of the Bhumjaithai Party in Soi Phahon Yothin 43, Bangkok.
The explosion damaged the party's office building.
The court sentenced Dejpol, Kampol and Kobchai each to 10 years in prison for organising the attack and a fine of 100 baht for illegally transporting explosives. Because they confessed, the jail term was commuted to six years and eight months and the fine to 66 baht.
Suriya was sentenced to five years in jail.
Mrs Varisriya was acquitted due to lack of evidence.
The Criminal Court in 2012 sentenced Anek to life after finding him guilty taking the bomb to the Bhumjaithai headquarters. The life sentence was commuted to 35 years in prison.
In April this year, the Appeals Court slashed the 35 years imprisonment to five years on the grounds that Anek's actions caused only minor damage to a nearby stall and car, and the Bhumjaithai Party reported little damage to its property.
Anek was blinded when the bomb in the pushcart exploded prematurely. He was the first suspect arrested. Information from him led to the arrests of other suspects.