By Oren Liebermann

PHILADELPHIA (CBS) — Police are investigating a home invasion in Northeast Philadelphia on Sunday afternoon.

Police say a man who robbed a home in the Crescentville section of the city at about 4 p.m. couldn’t break down the metal door that was locked with a dead bolt, so he simply knocked until someone opened the door.

“My dad’s scared,” said Yong Liu. “He cannot talk.”

Liu’s father, Jing Ky Liu, and cousin were in the home when police say the robber pushed his way in. Police say he was holding a revolver and demanding money.

“My cousin gave him $3,000 on the table and he took it,” said Liu. “He asked my dad for more money.”

Police say Liu’s cousin ran out the front door, but the suspect was not done yet. He wanted more money. At some point, police say there was a fight, and the suspect fired off a few rounds from the revolver, grazing the 68-year-old homeowner’s head.

“He feels a little bit better. One shot went here,” said Liu, referring to the right side of his head.

Liu says his father saw the suspect hanging around the neighborhood all day. At one point, he says, the suspect even asked for a light for his cigarette.

The suspect got away, and the victim was taken to Einstein Hospital for treatment. Police say he is doing fine and has already been released.

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