Thanks for contacting us. We've received your submission.

A man pistol-whipped a US postal worker on a Bronx street Tuesday morning and demanded she unlock the federal office, then grabbed more than $100,000 stashed inside before his caught-on-video escape, police said. 

The 56-year-old worker was in front of the post office on Castle Hill Avenue near Powell Avenue in Unionport just after 7 a.m. when the suspect approached her from behind and whacked her in the head with a gun, cops said. 

He demanded she unlock the building and open a safe inside, authorities said. 

The robber then snatched about $112,000 in cash and an unknown amount of money orders from the safe before taking off, cops said. 

Surveillance footage from nearby businesses show the thug’s white van first pulling up outside the office around 5:20 a.m. and remaining there.

Around 7 a.m., the victim and her husband are seen arriving in their car and parking across the street, with the husband walking his wife to the door before returning to their car alone.

The suspect, draped in black and holding a gun in his right hand, then jumps out of the passenger side of the van and runs up to the worker seconds later.

The postal worker’s husband, seeing something is amiss, runs back across the street and into the building — moments before his wife’s attacker dashes back out of the office holding a bag with the loot and into his getaway van.

The vehicle then drives off.

The woman’s husband was not hurt, sources said.

The crook is still in the wind. 

An FBI spokesman confirmed that the agency is investigating the incident. 

“At this time, I don’t have any other information I’m able to provide or confirm,” he said. 

Speaking outside the crime scene Tuesday, a postal inspector, Kathryn Searles, said the federal agency is working with law enforcement to nab the thief.

“Thankfully there were no injuries to any postal employees or customers,” Searles said. “Safety and security of postal employees is a top priority for the United States Postal Inspection Service.

“We are trained federal law-enforcement agents, and we have been doing this for 200 years, and we have extremely competent people,” she said. “We are working to solve this.”

The US Postal Service wrote in a statement, “At approximately 7:05 am this morning, the Castle Hill Station, 1163 Castle Hill Ave., Bronx, NY, 10462-9991 was robbed by an unknown individual.

“There were no injuries to employees or customers.

“The Postal Inspection Service is leading the investigation with support from NYPD and the FBI to locate and apprehend the individual responsible for this crime. If you have any information related to this matter, please contact Postal Inspectors immediately at 212-330-5266.”