Six people are presumed dead after the Francis Scott Key Bridge in Baltimore collapsed overnight Tuesday , the Coast Guard said on Tuesday night, according to CNN . The bridge came down around 1:30 a.m. ET after a cargo ship collided with it. The Coast Guard officially announced more than 18 hours after the incident that it has ended its active search-and-rescue operation for the missing construction workers who were on the bridge when it collapsed. Maryland Gov. Wes Moore said it was a "really heartbreaking conclusion to a challenging day", adding, "We put every single asset possible — air, land and sea" to find the missing people. "While even though we're moving on now to a recovery mission, we're still fully committed to making sure that we're going to use every single asset to now bring a sense of closure to the families," the governor added, as quoted by CNN . Officials have said that eight people were on the bridge when it fell. Two were rescued — one was taken to the hospital and has been discharged. Related articles: Baltimore police arrest suspect in arson at Jewish museum Bodies of two victims recovered Cargo ship collapses Francis Scott Key bridge 'Multiple victims' shot near Morgan State University Around 7:30 p.m. ET, the Coast Guard said it has transitioned to a “different phase” of operation, now it did “not believe we are going to find any of these individuals alive,” Rear Adm. Shannon Gilreath said. The bridge collapsed after a container vessel called Dali collided with one of its supports. The vessel is operated by Singapore-based Synergy Group but had been chartered to carry cargo by Danish shipping giant Maersk.