A newly installed pedestrian bridge over a major road in Miami collapsed on Thursday, killing four people and trapping multiple cars below.
The walkway, which connected Florida International University to a student housing area, went up less than a week before.
"We have located up to four victims. Four deceased," Miami-Dade Fire Chief Dave Downey told a news conference.
Maurice Kemp, the area's deputy mayor, said the search for survivors had not yet been abandoned.
"Miami-Dade county and our partner agencies... have been working feverishly in the search and rescue mode to ascertain how many victims there are and rescue as many as we can," Kemp told journalists.
"We will continue in this mode until we are certain there are no more viable victims, and at some point, we will transition into an investigation and recovery mode, but we're not there yet," he said.
Miami-Dade Fire Rescue Division Chief Paul Estopinan had earlier said that at least eight cars were trapped when the 950-ton (tonne) concrete bridge suddenly gave way.
The bridge had only installed on Saturday, ahead if its planned opening in 2019. AFP
Source: Radio Pakistan