UPDATED: March 30, 2015 7:56 p.m.

WASHINGTON (WNEW/AP)– Two men dressed as women smashed a stolen car into a police vehicle after they disobeyed commands at the closely guarded gates of the National Security Agency Monday morning, prompting police to open fire.

One of the men died, the other was injured and an NSA police officer also was taken to a hospital.

One of the men who was shot in the incident was identified as Kevin Fleming of Baltimore, U.S. law enforcement sources told CBS News. Fleming reportedly has a lengthy criminal record including for assault.

A senior defense official said the two men were dressed as women. That official also spoke on condition of anonymity.

It was not known why the men wound up at the gate at Fort Meade, a sprawling military post that houses the National Security Agency, or why they did not obey orders from NSA police.

An agency officer gave the driver “routine instructions for safely exiting the secure campus,” but the driver disobeyed them, the release said. The driver then accelerated toward a police vehicle blocking the road, and police then opened fire.

The men were dressed as women, said a senior defense official who spoke on condition of anonymity because the official was not authorized to discuss an ongoing case. It also was unclear exactly what the men were wearing.

PHOTOS from #FortMeade crime scene of PRESUMABLY a wig worn by one of the #NSAshooting suspects #NSA pic.twitter.com/HRbVHBhcwC — Brad Freitas (@Chopper4Brad) March 30, 2015

The car that rammed the police vehicle had been stolen Monday morning from a hotel in Jessup, said Mary Phelan, a spokeswoman for the Howard County Police Department. She declined to name the hotel, citing the ongoing investigation, or release any further details, referring all questions to the FBI.

The NSA said in a news release that investigators have not yet determined how the man in the vehicle died, and the conditions of the wounded man and officer were not disclosed.

Fort Meade, the U.S. Army installation that houses NSA, is one of the most secure locations near the nation’s capital. The fortified campus also includes the Defense Information systems Agency and the U.S. Cyber Command.

“The incident has been contained and is under investigation,” said Colonel Brian Foley, Fort Meade garrison commander.

“The residents, service members and civilian employees on the installation are safe. We continue to remain vigilant at all of our access control points.”

An FBI spokeswoman said the incident was not believed to be linked to terrorism.

A federal law enforcement official tells CBS News that cocaine and a weapon were found in or near the vehicle.

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The FBI is also investigating the shooting.

“We are investigating with NSA Police and other law enforcement agencies,” a spokesperson for FBI Baltimore says.

“Our Evidence Response Team is processing the crime scene, and FBI Agents are doing joint interviews with witnesses. We are working with the US Attorney’s Office in Maryland to determine if federal charges are warranted.”

Images from the scene show two damaged vehicles near a gate and emergency workers loading an injured uniformed man into an ambulance. One of the damaged vehicles was a white SUV marked “NSA Police.” Its front end was crumpled, and the hood was up. The other was a dark, unmarked SUV.

It’s not the first time someone has disobeyed orders at an NSA gate. In July, a man failed to obey an NSA officer’s command to stop as he approached a checkpoint. The man drove away, injuring an NSA officer and nearly striking a barricade. He was later arrested.

A building on the NSA campus was damaged by gunfire earlier this month. Authorities captured a man March 3 who they believe fired that night on the NSA site, as well as earlier at several nearby places and two moving vehicles. The suspect in that case, Hong Young, told police he heard voices directing him to fire on one of the occupied vehicles.

The post is the largest single employer in Maryland, with offices for about 11,000 military personnel and 29,000 civilian employees.

Posted signs inform drivers of various exits for the NSA and Fort Meade, including one for deliveries, another for the visitors center and one designated only for employees.

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(TM and Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)