The 25-year-old Chinese national was charged on 10 Aug.
Keppel is expected to receive cumulative cash of more than S$700 million.
The Vietnamese man in his 30s is under investigation for multiple offences.
The injured trio declined to be sent to the hospital.
No injuries were reported, said SCDF.
The enforcement operation was reportedly in response to public complaints.
Two men had evacuated from the car and were checking its undercarriage before the fire started, a resident said.
Multiple suspicious attempts to access voucher links on RedeemSG were found.
The police are investigating the suspects' possible involvement in housebreaking cases reported between April and July this year.
They compared Singapore's racial equality positively against Malaysia.