Police said a 35-year-old man was stabbed in the back at the Greyhound bus terminal at 10th and Filbert Streets in Philadelphia early Sunday morning.

The victim, who was not identified, was in stable condition at Thomas Jefferson University Hospital, authorities said.

No other details were available.

Police could not confirm earlier media reports that multiple people were stabbed, and that the attack, at 5:34 a.m., was sparked by an argument over a bag of cocaine.