By Kristen Johanson

PHILADELPHIA (CBS) — Philadelphia police are investigating the stabbing of a 22-year-old man in a popular Center City neighborhood.

The incident happened just before 3 a.m. Sunday at 15th and Sansom Streets.

ALSO READ: Police: Pregnant Woman Found Dead After Suspicious House Fire

The victim was stabbed once in the chest and was taken to Hahnemann Hospital.

Officials says he remains in critical condition.

No arrests have been made.

Watch & Listen LIVE