A man was killed by the explosion of a handgrenade in a plastic bag found against the wheel of a pickup truck in the car park of an apartment complex on Monday morning.
About 8am on Monday, police received a report of a man injured severely by a bomb blast at an apartment complex in Lat Krabang district in Bangkok.
Wanchai Noomdee, 32, was found lying next to a pickup truck with severe injuries to his right hand, chest and stomach. He was rushed to a hospital but succumbed to his injuries.
His girlfriend Rattaporn Imkham said they were leaving for work. She was driving and could not get her pickup to move.
She then noticed a plastic bag placed by a wheel of the truck. There was something in the bag, so she asked her boyfriend, who was in the passenger seat, to check it out.
"It was just a few seconds, I heard a loud explosion, I turned around and saw him lying on the ground covered in blood, so I called the police," Ms Rattaporn said.
Ms Rattaporn alleged she had received threatening messages from Wanchai's former girlfriend.
Wanchai had also been attacked by a group of men on Feb 15, she said.
She told police that her dead boyfriend also had a few arguments over parking spots with their neighbours in the apartment complex.
After an initial investigation, police believed the killer removed the safety pin from a handgrenade and placed it the bag in a way that moving it would release the trigger and set off the detonator.
Police said the killer could be a bomb expert.
Police inspect the car damaged by a handgrenade explosion that killed a man at an apartment building car park in Lat Krabang on Monday morning, March 18, 2013.