An American Airlines flight from Milan to New York made an unscheduled stop at London’s Heathrow Airport on Monday.

A man onboard needed medical attention, according to airline spokesman Matt Miller, though no specific information regarding the man's symptoms or condition was available.

American Airlines Flight 199 is carrying 156 passengers and 12 crew members, Miller said.

The flight was originally scheduled to land at New York’s JFK airport at 1:15 p.m. ET. The post-diversion arrival time is 3:10 p.m., according to FlightStats.com.

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