Makeshift memorial sites continued to grow Tuesday morning around City Hall following the sudden death of Mayor Ed Lee early in the morning.

The mayor died at 1:11 a.m. at Zuckerberg San Francisco General Hospital after suffering a heart attack. He was 65.

SEE RELATED: San Francisco Mayor Ed Lee dies at age 65

Board of Supervisors President London Breed became acting mayor of San Francisco following Lee’s death, in accordance with city charter.

City Hall flags were lowered to half-staff following Lee’s death. On the Polk Street steps of City Hall, a lone bouquet of flowers and a candle were displayed, along with a note that reads, “I love you, Mayor Lee. I loved having you as mayor.” — Evie, age 3 3/4

Another bouquet of flowers was placed outside the mayor’s office inside City Hall.

City officials were expected to hold a news conference at 10 a.m. regarding Lee’s death.

SEE RELATED: SF leaders express shock, sadness at sudden death of Mayor Lee