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PHILADELPHIA (CBS) – Police are searching for two Hispanic men who posed as PGW workers in order to rob a couple of several thousand dollars and jewelry.

The home invasion happened on the 4500 block of Higbee Street at 2:46 p.m.

Police say the victim allowed the two men into his home after being told there was a gas leak in the area and his basement needed to be checked. He showed them to the basement and moments later one of the men came upstairs and ask the victim to go downstairs so they could show him something.

When he went to the basement, the other man was waiting with a handgun. The men proceeded to zip tie the victim’s hands behind his back and demand money.

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Police say one of the men told the victim they knew he had money in the home and began to strike him with the firearm on his head and kick him repeatedly in the head.

After about 25 minutes of being in the home, the victim’s fiance reportedly arrived at the house. When she opened the front door, one of the men grabbed her ripping her jacket.

The fiancé came out of her coat and ran from the residence screaming.

The men then fled the scene. They were possibly driving a blue Infiniti sedan with tinted windows that was parked across the street.

While processing the scene police found two PGW white hardhats, a black knit hat, a yellow combustible gas detector, a clipboard with blank sheets of paper, and numerous zip ties.

Police say the men are both Hispanic. One is described as 25-35 years old, 5 feet 9 inches, 175-180 pounds, very light skinned, wearing a navy blue uniform, armed with a black semi-automatic handgun.

The second suspect is described as 25-35 years old, 5 feet 9 inches, medium build, has a medium skin complexion, and was wearing a navy blue uniform.

Stay with CBSPhilly.com for this developing story.