(AP) -- Miami City Manager Daniel Alfonso says a second tower crane has collapsed into a building under construction in the city's downtown area. Alfonso told The Associated Press that the crane collapsed in a large development with multiple towers being built by Grand Paraiso.
Another crane collapsed earlier Sunday onto a high-rise building that's under construction in a bayfront area filled with hotels and high-rise condo and office buildings, near AmericanAirlines Arena. No injuries have been reported.
A third construction crane reportedly fell to Irma's winds in Fort Lauderdale. No injuries were reported.
High winds are impeding Miami authorities' ability to reach the cranes, and authorities are urging people to avoid the areas.
Alfonso says the approximately two-dozen other cranes in the city are still upright and built to withstand significant wind gusts.
The tower cranes working on construction sites throughout the city were a concern ahead of Irma. Moving the massive equipment, weighing up to 30,000 pounds (13,600 kilograms), is a slow process that would have taken about two weeks, according to city officials.