Philadelphia Police officers responding to the report of fight in South Philadelphia Thursday night shot the suspect after he pointed a knife at them at the intersection of 10th and Mifflin Streets.
"Upon police arrival they saw a male stabbing two other individuals, a father and son," said Police Inspector Scott Small.
Despite warnings from the officers, the suspect continued to stab the victims, Small said.
Sources tell NBC10's Nefertiti Jaquez that the man was shot three times.
One officer shot the 23-year-old suspect causing him to fall to the ground. Small said that man was taken to Jefferson University Hospital in stable condition.
Two victims, a 50-year-old father and his 24-year-old son were taken to Hahnemann Hospital in stable condition. The father with a head wound, the son with wounds to his arms and torso.
Small said it appears that the suspect knew the father and son when he attacked with an 8-inch folding knife but no motive for the attack was given.