DENVER (AP) — A woman was killed and two others injured in a series of three stabbings Denver police were investigating to see if they were related.

The stabbings happened between 5 p.m. and 6 p.m. Saturday near the 16th Street Mall, a popular downtown shopping area, the Denver Police Department said in statements on X.

Police announced the woman’s death Sunday. They had not released the identities of the victims or condition of the survivors.

Police were uncertain whether the stabbings were connected, but on Sunday they released a grainy image of a person dressed in black they said was a suspect.

The suspect and victims had no apparent connection and any motive for carrying out the attack was unknown at this point, police said.