By Anita Oh

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PHILADELPHIA (CBS) – It was a terrifying ordeal for a family in Philadelphia’s Cobbs Creek section, when someone opened fire into their home overnight. Investigators say six people, ranging in age from just 2 to 95, were inside at the time.

Philadelphia Police are asking the public’s help in finding the gunman who stood on the porch and opened fire into the home at point-blank range.

“To hear about that, it’s disgusting. It’s disgraceful,” said one neighbor who’s been living on the 5200 block of Rodman Street since 1959.

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“Back in our day, it was a fist fight. Today, they want your life and if they want to take it, they’re going to take it,” the neighbor said.

Philadelphia Police say just after 3:15 a.m. Thursday, a gunman fired at least five times through the window of a Cobbs Creek rowhome, striking a 95-year-old great-grandfather who was lying on the couch.

“We have a poor 95-year-old guy just sitting on his couch and takes a bullet. That’s just unacceptable behavior,” said Philadelphia Police Lt. John Walker.

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First responders also found a 33-year-old man bleeding heavily on the second floor stairs. He remains in critical condition at Penn Presbyterian. Now, authorities want to talk to that man’s 19-year-old brother, Khymeir Tyler, who was under house arrest for a gun charge but is now on the run.

“You have a young man under house arrest out of the house and people coming to visit him. You become a sitting duck at that point if someone’s looking for you,” said Walker.

Walker says the working theory is that Tyler was sitting outside on the steps.

“The gunman came up to him and he tried to run inside the house and the gunman fires through the window, striking two people inside the house.,” said Walker.

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Investigators are reviewing nearby surveillance cameras to help catch whoever is responsible. At this time, if you know anything, call the TIP line at 215-685-TIPS; you can remain anonymous.