It happened on the 1300 block of South 10th Street just after 1 p.m.
Investigators say a 40-year-old man was stabbed in the chest. He was hospitalized in critical condition.
A 27-year-old man was also stabbed twice in the arm, according to authorities. He was listed in stable condition.
A weapon was recovered at the scene and no arrests have been made.
Anyone with information on this incident is asked to contact the police.
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