UPDATE: 18 dead, dozens still missing after a 12-story Florida condo collapsed

• Crews continue to comb through the rubble of a partially collapsed condo building for survivors.
• Days after the June 24 collapse, 147 people are still missing.
• Eighteen people have been confirmed dead.

Search and rescue crews continued to search through the rubble of a partially collapsed Florida condo building on Wednesday, with at least 18 people now confirmed dead and dozens still missing.

A section of Champlain Towers South, located on Collins Avenue in Surfside, Florida, crumbled just after 1 a.m. last Thursday.

Officials said Saturday they had identified four of the people found dead. The first victim, identified Friday by the Miami-Dade County Medical Examiner's office, was Stacie Fang, 54. The other three victims were identified as Antonio Lozano, 83; Gladys Lozano, 79; and Manuel LaFont, 54.

Mayor Daniella Levine Cava of Miami-Dade County, at a press conference on Wednesday, said the confirmed death toll is now 18, including two children, ages 4 and 10. At least 147 people remain unaccounted for.

President Joe Biden signed an emergency declaration for Florida after the collapse, allowing the Federal Emergency Management Agency to coordinate disaster relief. Fifteen people from FEMA are set to arrive later on Friday, spokesman Kevin Guthrie of FEMA told the Friday press conference.

The way the building collapsed has made it difficult for rescue teams to locate survivors, Mayor Charles Burkett of Surfside said.

"The problem is the building has literally pancaked," Burkett said. "It's heartbreaking because it doesn't mean, to me, that we're going to be successful, as successful as we want to be, to find people alive."

In an interview with the "Today" show, Burkett said the building damage was catastrophic.

"It looks like a bomb went off, but we are pretty sure a bomb didn't go off," Burkett said.

To complicate rescue matters, a fire spread around the site of the collapse on Saturday, according to Cava. Firefighters have not been able to identify the source of the fire, Cava said during a press conference.

And the building's structural integrity is in question after reports of "major structural damage" to the condo. Additionally, an engineering consultant found evidence of "abundant" cracking and fragmentation in the building's columns and beams, according to an inspection report from 2018.

Videos and images posted on Twitter showed rubble from the caved-in building and fire department personnel responding.

Video from the scene showed rescues from the collapsed condo's balconies, including NBC Miami footage showing a young person being pulled from the rubble.

Tweets from student reporter Eric Wasserman, who was at the scene, said residents were trapped in the portion of the building that had not collapsed, and that more than one person was injured, including a firefighter.

Miami-Dade Fire Rescue said that more than 80 rescue units were helping at the scene of the collapse.

A real-estate profile for Champlain Towers South said it was built in 1981. There are 136 units on the 12-story property, with two- and three-bedroom units that range from $590,000 to $915,000.

The site of the building collapse is located just minutes from the posh Arte Surfside, where Kushner and Trump are said to be leasing a home.

This is not the first time Collins Avenue in Miami Beach has seen a building collapse. In 2018, CNN reported that an empty 12-story building at 5775 Collins Ave. due for demolition collapsed at an unscheduled time, critically injuring one person.