ROXBOROUGH (WPVI) -- A group of masked men are on the run after allegedly stealing cell phones and $2,000 from an apartment in Philadelphia's Roxborough neighborhood.The break-in happened around 2:30 a.m. Monday on the 400 block of Domino Lane.A man there says he was sleeping when he woke up to someone tapping his head and pointing a gun at him.The victim says the man also threatened his seven-year-old son, who was sleeping in another room.After grabbing the cash and the phones, they tied the victim's arms behind his back.He was able to free himself and call 911.