Newark Liberty International Airport briefly grounded all arriving and departing flights on Saturday morning after a flight that had departed from La Guardia Airport made an emergency landing at Newark, officials said.

The flights were grounded around 8:45 a.m. An hour later, flights resumed, but officials said to expect delays. Airport officials on Twitter described what happened as an “airport emergency.”

Scott Ladd, a spokesman for the Port Authority of New York and New Jersey, which runs the airport, said a United Airlines flight that had left La Guardia Airport headed for Houston experienced hydraulics problems around 8:30 a.m. and had to make an emergency landing at Newark.

“The plane blew a tire on landing and there was other structural damage that forced closure of the runway,” he said.