NEWARK, NJ -- Newark Airport shut down all incoming and outgoing flights this morning, according to the airport's Twitter feed.

Due to an airport emergency there are currently no arrivals nor departures from Newark Airport. Please check with your carrier before coming to the airport. - @EWRairport 

Multiple media sources, including WCBS 880 and WPIX-TV, are reporting that a Houston-bound United Airline plane that left LaGuardia had to make an emergency stop in Newark due to possible mechanical failures.

Anyone flying today should check with their airlines regarding flight schedules.