By CBS3 Staff

PHILADELPHIA (CBS) — A teenage boy was critically injured in a West Philadelphia shooting. Police found the 15-year-old victim on the 400 block of Redfield Street in Haddington, just before midnight on Wednesday.

He was in a second-floor bedroom with a gunshot wound to his shoulder.

Investigators say they’re trying to figure out where the teen was shot since no shell casings were found in the home.

Stay with CBSPhilly.com for updates to this developing story.