Flights were temporarily grounded at New York City's LaGuardia Airport Wednesday night, the Federal Aviation Administration confirmed to Fox News Digital. 

"We implemented a ground stop for La Guardia Airport due to law enforcement activity," the FAA said. "We canceled the ground stop and resumed normal operations."

The exact nature of the law enforcement activity is unclear.

Unconfirmed reports on social media said the ground stop was related to an FBI prisoner escaping custody. 

DALLAS POLICE ENGAGE FEMALE SHOOTER WHO OPENED FIRE BY AIRPORT TICKETING COUNTER

Flights were averaging 45-minute delays after the ground stop ended late Wednesday, WABC-TV reported. 

LAS VEGAS AIRPORT FLIGHTS GROUNDED AFTER ‘UNFOUNDED’ REPORTS OF SHOOTING SPARK PANIC 

The FAA issued a ground stop at LaGuardia earlier this week related to air traffic control staffing shortages, warning that flights could be delayed up to two hours, Reuters reported. 

That ground stop was lifted on Monday.

CLICK HERE TO GET THE FOX NEWS APP

LaGuardia is located in Queens, New York, and is one of the region's main airports.