The shooting took place at around 9:15 p.m. at 79th and Western, one block from St. Rita High School.
The fire department says one victim is in critical condition. The other victims are in fair condition.
The circumstances of the shooting were still not clear Monday night.
According to some witnesses, the suspects pulled up to the bus terminal in an SUV and shot at a person waiting for the bus. Police have not confirmed that yet. Also, it is possible that there was a related scene a few blocks away. Several squad cars rushed to the scene of another possible shooting close by to investigate.