Special Branch police are investigating the background of the male foreigner who set himself on fire in front of the Iranian embassy in Bangkok on Friday.
The unidentified man is being hospitalized with serious burns.
Police found a note left in front of the embassy by the man which reads don't vote in English and Arabic. A plastic bottle which was used to contain gasoline and a lighter were found at the scene.
Quoting eyewitnesses, police said that the man stood in front of the Iranian embassy and then shouted in Arabic language before he doused himself with gasoline that he brought with him and set himself alight with a lighter.
Police guarding the embassy then used a fire extinguisher to put off the fire and then alerted rescue workers to rush man to the nearest hospital.
It was reported that police went to the victim's lodging hoping to find evidence which could help determine his nationality and name.
Iran is preparing for an election but it is not known whether the election was the motive for the man to inflict harm on himself.
Source: Thai Public Broadcasting Service (Thai PBS)