CNBC – Subway spokesman Jared Fogle's home in suburban Indianapolis was being searched on Tuesday morning.
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Aerial footage from NBC affiliate WTHR showed the Zionsville house surrounded by police cars and cops.
Agents took electronics, including a computer, from the home and carried them to an evidence truck in the driveway.
Police escorted Fogle, a longtime brand ambassador for the sandwich chain who once weighed 425 pounds and lost nearly 250 pounds with his own Subway diet.
FBI Agent escorting Subway's Jared during a child porn investigation raid at his Zionsville home Tuesday @WTHRcom pic.twitter.com/2o8q63wZLl
— Steve Scoop Jefferson (@scoopjefferson) July 7, 2015
WTHR reports Fogle was detained outside his home though he has not been placed under arrest.
Privately held Subway and Jared Fogle did not immediately respond to CNBC's request for comment. CNBC's call to Indiana State Police also was not immediately returned.
In a statement, the FBI said it "is conducting investigative activity in the area. We can not disclose the nature of the activity at this time."
Subway is the largest restaurant chain by locations with more than 44,000 restaurants in 110 countries.