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OAK LAWN, Ill. — Oak Lawn police are searching for four people involved in an armed home invasion.

Police said around 6 p.m. Tuesday, a woman posing as if she was selling candy rang the doorbell of a home on the 4600 block of West 105th Place.

When an elderly woman opened the door, a man wearing a white T-shirt over a blue hoodie knocked her to the ground and pulled out a gun while the woman and another man ran into the home.

The three left the home in a white Kia Optima. Police said money was taken as well as the keys to the home.

The woman, who is in her 70s, had minor injuries and is expected to be OK.

Oak Lawn police released photos of some of the people involved and said they are going through video as they continue their investigation.

Neighbor Mary Miller says her cameras are always on.

“For security. For security,” she told WGN News.

Miller’s cameras helped capture images of the suspects. Miller says the circumstances in which the home invasion occurred are disturbing, however.

“Kids don’t sell candy bars no more,” Miller said. “The schools don’t allow them to sell candy bars just because of things like this.”

Miller adds that the neighborhood is safe and “loaded with police,” which makes the situation that unfolded all the more disheartening.

“Those poor people, you can’t find nicer neighbors,” Miller said.

Anyone with information is asked to call the Oak Lawn Police Department Detective Division at (708) 907-4051.