PETALING JAYA - When coffee shop manager Chong May Lon drove over a rock while pulling out of the dirt driveway of her home in Kampung Baru Subang, she did not think much of it - until a hand grenade underneath went off.
The explosion from the grenade sent ball bearings ripping through the car, damaging the back bumper.
Chong said she was about to exit her home along Jalan 4D at 6.45am yesterday in her Toyota Vios when she felt the bottom of her car hit something hard.
"Then, I heard a loud boom and I felt my car lift off the ground slightly. It happened really fast.
"When I got out of the car, I smelled a very strong chemical scent and saw that my car's back bumper had fallen off. I immediately shouted for my husband."
"I don't know who would want to do this to us," said the traumatised woman.
She had knocked off a 12kg rock which had been placed at the end of her dirt driveway. Underneath the rock was a hand grenade, which exploded the moment the rock was moved.
Sungai Buloh OCPD Supt Junaidi Bujang said Chong was lucky to walk away with no injuries.
"Someone had left a hand grenade underneath the rock. We know it is a grenade because we found the pin near the scene. We believe someone placed the rock over it to put pressure on the lever so that it would only explode when the rock was moved.
"As the rock was large and heavy, it lessened the impact of the grenade. Moreover, her car boot has a spare tyre inside which also helped minimise the damage," he said, adding that the explosion sent ball bearings ripping through the car.
Supt Junaidi said police believe that the suspect had placed the grenade and rock at the driveway after midnight.
While it would take an amateur 15 minutes to set up such a booby trap, an expert could do it within three minutes, he added.
There were 10 family members, including four young children, in the house at the time of the incident.
Supt Junaidi said both police and Chong's family were stumped on who could have done this and why.