The man was discovered with bruises on his back and injuries on his nose.
Othman Wok said he was among those who worked in Unit 9420, an offshoot of Unit 731.
His wife was unaware of the incident, despite it occurring just 2m from their home.
The e-bike lacked a rear number plate, which is required by law.
A 13-year-old male student also died at the scene.
No more Donki impulse buying.
The driver survived but was rushed to a private hospital for emergency treatment.
Faith in humanity restored.
It is uncertain whether anyone was injured.
Some netizens suggested there was no difference.