Three people were killed in a shooting in St. Paul on Monday, continuing a recent string of gun violence in the Twin Cities with multiple victims. Monday's victims, who were all identified as adults, were found dead by police in the leasing office of an apartment building along the 1500 block of St. Paul Avenue. "This is an unbelievably big tragedy for our city," St. Paul Police Chief Axel Henry said during an evening news conference. Officers with the St. Paul Police Department responded to a fatal shooting in an apartment building on St. Paul Avenue on Monday. The incident comes two days after one man was killed and two injured in a shooting in St. Paul's Frogtown neighborhood.