NEW YORK (CBSNewYork) — A suspect was in custody with charges pending Monday night in connection with the brazen robbery of a watch store that prompted police to shut down the Diamond District in Midtown last week, police said.

Police identified the man in custody as Rondu Frisby, 37. Charges were pending, police said.

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Sources told CBS2 News Frisby was an employee of the store, and was inside when the robbery occurred. He was arrested earlier Monday at a relative’s apartment, sources said.

Sources previously said investigators had found that an employee of the store that was robbed had a criminal record, and also had some financial troubles.

Police said they were also looking for a second man, identified as Leon Fenner, 58. Police late Monday released a mugshot of Fenner.

Leon Fenner is wanted in connection with the robbery of a watch store in the Diamond District on 47th Street. (Credit: NYPD)

Leon Fenner is wanted in connection with the robbery of a watch store in the Diamond District on 47th Street. (Credit: NYPD)

Fenner was identified by police as the man who appeared in surveillance video and photos with a hat and trench coat, and was believed to have been the lookout. A third suspect, who also appears in the surveillance video, was believed to be behind the attack, 1010 WINS reported.

Suspects wanted in Diamond District heist. (credit: NYPD)

Suspects wanted in Diamond District heist. (credit: NYPD)

The gunpoint robbery happened this past Tuesday around 2:30 p.m..

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The robbers held up the Watch Standard jewelry store located on the eighth floor of 23 W. 47th St. Police said a man posing as a courier was buzzed into the store while a second man stood outside as a lookout.

“He had a white button down shirt with a dark tie. He walks up the stairs to the eighth floor and he had said he had two letters that had to be delivered,” NYPD Deputy Chief William Aubry said last week.

But once inside, investigators said he pulled a gun on four employees and demanded they empty the safe. That’s when the owner walked in and detectives said the suspect pistol-whipped him with the butt of the gun.

Following the robbery, some area employees were ordered to stay inside, while others were evacuated.

With millions in jewels on display, there are countless cameras in the area, including one operated by police just outside the building.

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