By Anita Oh

PHILADELPHIA (CBS) — Philadelphia police are searching for a gunman who opened fire overnight in North Philadelphia, killing a 16-year-old boy and wounding a 12-year-old.

Witnesses say the gunman appeared to be 5-foot-6 and wore dark clothing, but investigators may get a better idea after talking to the 12-year-old, who in stable condition at Temple University Hospital.

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Investigators say around 12:15 a.m., a gunman fired bullets into a group of teens on the 2700 block of North 19th Street by West Somerset Street.

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Bullets hit the 16-year-old twice in the chest and once in the neck, while the 12-year-old got hit once in the leg.

“Right now our scene consists of eight shell casings, four projectiles, and four strike marks on the actual property – one on the door and three on the wall. It appears to be unoccupied,” said Philadelphia Police Capt. George Fuchs.

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Investigators are looking for cameras in the area and talking to witnesses. If you know anything, call police at 1-215-686-TIPS.