Two men on a motorcycle were torn into pieces by a blast of a homemade bomb in Bangkok's Min Buri district late Saturday night, police said.
One of them was identified as Boonluen Pinta from Prae.
The explosion occurred at the car park of Tohlibun Islamic religious school.
Eyewitnesses told police that the two men were riding a motorcycle to stop there and their motorcycle was followed by a van. When two other men got out of the van walking to the motorcycle, the explosion occurred. The two other men fled the scene in the van, the witnesses said.
Police found another homemade pipe bomb which did not explode.
Police suspected that the two men were carrying two homemade bombs and one of them accidentally exploded.