The police and the Singapore Civil Defence Force said they were alerted to the incident at about 7.20 am along the BKE towards the Woodlands Checkpoint.
NEA said this was likely caused by a hotspot and smoke plume detected in Johor, which is located close to Singapore.
The police said that the 34-year-old male driver of the car is assisting with the investigations.
Despite being given several warnings, he continued to disregard police instructions and was subsequently arrested for disorderly behaviour.
Pretti remained on his hands and knees for several seconds before an agent in a gray jacket appeared to take hold of his gun, moments before the fatal shots were fired.
Pretti, an intensive care nurse with the Veterans Affairs department, was remembered by his devastated family as a kind, compassionate, and deeply caring person.
The Department of Homeland Security (DHS) said that the man took out his gun and threatened Fed agents while they were attempting to arrest an illegal criminal.
The Department of Homeland Security said that the man took out his gun and threatened officers while they were attempting to arrest an illegal criminal.
Video footage shows agents grappling with the man on the ground before one federal officer fired several shots into his chest.
Preliminary investigations revealed that the rental car's key had been left unattended overnight on one of the vehicle's tyres.
MINDEF stressed that such false alarms divert security resources and can cause unnecessary public concern, and said investigations into the incident are continuing.
The offence carries a penalty of up to S$10,000 in fines, imprisonment of up to three years, or both.
The police said the man was arrested on suspicion of dangerous driving causing death, following investigations into the incident that occurred a day earlier.
The iconic chicken chain has also earned a place in pop culture, with Chicago rappers such as Chance the Rapper and Lupe Fiasco giving it shout-outs.
Investigators have not yet determined what caused the crash, and authorities have not released the driver's name.
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