While the Sydney Morning Herald reports that a female passenger is a suspect, Foote said that two men "of Middle Eastern origin" seemed to be the subjects of investigation and were detained by police upon arrival in Abu Dhabi.
"One of the guys had a very nervous demeanor and intermittently changed seats throughout the flight from directly in front of me to another vacant seat with his travel companion," said Foote.
"During the first flight, when he entered the bathroom about seven staff members were congregated around the area, two of whom held fire extinguishers."
Upon landing at Abu Dhabi Airport, all passengers and crew were interviewed by authorities.
Etihad Airways has not commented on suspects, stating only that the event is still under investigation.
Abu Dhabi police are also investigating the incident.
Passengers have lauded the airline's crew for rising to the occasion.
Passenger Paul Ross wrote to CNN praising the airplane crew's response.
"The crew on this flight should be highly commended," wrote Ross. "They dealt with these incidents with complete professionalism. They ensured there was no panic and kept passengers on the plane calm and settled."
Foote called the crew's response "extraordinary."
As for his own state of mind during the episode, Foote said that the flight felt "so surreal it didn't really feel dangerous."
"Like most passengers on board, my biggest reaction was frustration at the delay and anger toward the person or persons who were attempting to light the fire."