The death toll from a partially collapsed Miami-area condominium rose by four to 32 as rescue workers braced for a tropical storm and relatives of a deceased family of four prepared for the disaster's first funeral, officials said on Tuesday.

According to a Reuters report, a total of 113 people remained missing 12 days after roughly half of the 12-story Champlain Towers South building came tumbling down early in the morning on June 24.

Rescue workers have expanded their search following the controlled demolition of the remainder of the building on Sunday night.

Investigators have not determined what caused the 40-year-old complex to collapse. A 2018 engineering report found structural deficiencies that are now the focus of inquiries that include a grand jury examination.

(With input from agencies)