Nick Burkett’s family huddled together in the cold, passing a bouquet, candles and laminated sheet of photos between them as they created a makeshift memorial on Denver’s 16th Street Mall on Friday afternoon.

Elijah Caudill, 24, is accused of stabbing four people over the weekend, killing two of them. DENVER — Prosecutors on Friday formally charged the man who's accused of carrying out a series of attacks on the 16th Street Mall in Denver over the weekend.

The family of 34-year-old Nick Burkett started a memorial of candles, flowers and pictures near 16th Street and Wazee Street in downtown Denver on Friday, just days after his death. He and 71-year-old Celinda Levno were killed in two of the four random stabbings along the 16th Street Mall last weekend.