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According to a source, one of the passengers may have been smoking marijuana in the car and continued to do so even after being asked by Daaboul to stop.
The four passengers were left between exits 2 and 3 near an old weigh station.
"I can't comment now until the investigation is over," was all Daaboul had to say when asked about the incident by FOX25.
A source told FOX25 that Daaboul went to the State Police Barracks in Foxborough and told troopers what had happened.
Daaboul is a security guard with Brinks in addition to driving for Uber and is licensed to carry the gun, although he has turned it over during the investigation. He is not charged with anything at this time but has been summonsed to appear in court.