I thought it was the owner's father who was the FBI informant.
It's not completely clear to me, but from reading the article it sounds like the owner, "Malik", was the FBI informant. :
"The limousine company is based at the Crest Inn Suites & Cottages in Gansevoort, N.Y., a small town north of Albany, and on Monday, state troopers were at the hotel. The State Police said they had seized three vehicles from the company and believed that Mr. Hussain was outside the United States.
Arnie Cornett, the manager at the hotel, identified the owner as “Malik” and said he lived in Dubai. Mr. Hussain, the informant,
went by Malik when he helped the F.B.I. infiltrate a mosque in Albany.
Mr. Hussain, the man whose name seems to be associated with the limousine company, posed as a wealthy Muslim radical and was
the central prosecution witness in a 2004 federal sting focusing on a pizzeria owner and an imam at an Albany mosque. Six years later, Mr. Hussain, who
posed as a terrorist, played a key role in the government’s case in a plot to blow up two synagogues in the Bronx.
He
became an F.B.I. informant after being charged in 2002 with a scheme that involved taking money to illegally help people in the Albany area get driver’s licenses."