Four people were pistol-whipped early Sunday during a violent home-invasion robbery in South Philadelphia.

A 23-year-old man told investigators he was upstairs with his girlfriend, also 23, shortly before 1 a.m., when he heard someone knocking on the front door of his home on the 2000 block of Mifflin Street.

When he answered, two men wearing ski masks and armed with handguns forced their way inside and pistol-whipped him, according to investigators.

Police said the suspects ordered the man into a front upstairs bedroom and held him at gunpoint while repeatedly asking, "where's the money?"

One gunman went into the rear bedroom and also demanded money from the victim's girlfriend, police said.

When she said she had none, he allegedly instructed her to place a laptop and video game console into a plastic trash bag.

Police said that, as she was bagging up the items, the suspect told her to hurry up and smacked her twice in the back of the head before forcing her into the front bedroom.

A 23-year-old man who also lives at the home then returned with a male friend, 18, and knocked on the front door, police said.

The gunmen allegedly answered, forced both men inside at gunpoint and pistol-whipped them.

Police said the suspects corralled the men in the front upstairs bedroom with the other two victims, then ransacked the home's second floor.

They fled in an unknown direction, making away with a black HP laptop, an Xbox 360, 10 video games, four cell phones, a wallet and $1,000 in cash, according to investigators.

None of the victims required medical treatment, police said. An investigation remained ongoing Sunday afternoon, and no arrest was reported.

The suspects are described as two black males, one of them between 5-foot-10 and 6 feet and in his early to mid 20s; the second between 5-foot-4 and 5-foot-6.

Anyone with information is asked to contact Philadelphia police.

Contact Alex Wigglesworth at 215-854-2305 or awigglesworth@philly.com. Follow @phila_lex on Twitter.
Contact the Breaking News Desk at 215-854-2443; BreakingNewsDesk@philly.com. Follow @phillynews on Twitter.