A livestream showed vehicles traveling on the Francis Scott Key Bridge just moments before the impact at 1:28 a.m. ET.
Baltimore first responders called the situation a “developing mass casualty event” and a “dire emergency,” per The Associated Press.
James Wallace, chief of the Baltimore Fire Department, said in a press conference that two people had been recovered from the water.
One was uninjured, but the other was transported to a local trauma center in a “very serious condition.”
Wallace added that rescuers are looking for at least seven people. Sonar detected several vehicles submerged in the water, but no precise number was available as of the 6:30 a.m. press conference.
Richard Worley, Baltimore’s police chief, said there was “no indication” the collision was purposeful or an act of terrorism.
Wes Moore, the governor of Maryland, declared a state of emergency around 6 a.m. ET. He said his office was in close communication with Pete Buttigieg, the transportation secretary.
“We are working with an interagency team to quickly deploy federal resources from the Biden Administration,” Moore added.
The vessel is the Dali, a Singapore-flagged container ship about 984 feet long, and 157 feet wide, per a listing on VesselFinder.
An unclassified Cybersecurity and Infrastructure Security Agency report said that the ship “lost propulsion” as it was leaving port, ABC News reported.
The crew notified officials that they had lost control and warned of a possible collision, the report said, per ABC News.
The Dali’s owner is listed as Grace Ocean, a Singapore-based firm, and its manager is listed as Synergy Marine, which is also headquartered in Singapore.
Shipping news outlet TradeWinds reported that Grace Ocean confirmed the Dali was involved in the collapse, but is still determining what caused the crash.
Staff for Grace Ocean declined to comment on the collision when contacted by Business Insider.
“All crew members, including the two pilots have been accounted for and there are no reports of any injuries. There has also been no pollution,” Synergy Marine said in a statement.
The company did not respond to BI’s request for comment.
Maersk chartered the Dali, with a schedule for the ship on its website.
“We are horrified by what has happened in Baltimore, and our thoughts are with all of those affected,” the Danish shipping company said in a statement.
Maersk added: “We are closely following the investigations conducted by authorities and Synergy, and we will do our utmost to keep our customers informed.”
Per ship tracking data, the Dali left Baltimore on its way to Colombo, the capital of Sri Lanka, at around 1 a.m., about half an hour before the crash.
The Port of Baltimore is thought to be the largest in the US for roll-on/roll-off ships carrying trucks and trailers.
Barbara Rossi, associate professor of engineering science at the University of Oxford, told BI the force of the impact on one of the bridge’s supporting structures “must have been immense” to lead to the collapse.
The Dali is also listed as being built in 2015 by Hyundai Heavy Industries in South Korea.
Claudia Norrgren, from the maritime research firm Veson Nautical, told BI: “The industry bodies who are here to protect against incidents like this, such as the vessel’s flag state, classification society, and regulatory bodies, will step in and conduct a formal investigation into the incident. Until then, it’ll be very hard for anyone to truly know what happened on board.”
This may not have been the first time the Dali hit a structure.
In 2016, maritime blogs such as Shipwreck Log and ship-tracking site VesselFinder posted videos of what appears to be the stern of the same, blue-hulled container vessel scraping against a quay in Antwerp.
A representative for the Port of Antwerp told BI the Dali did collide with a quay there eight years ago but couldn’t “give any information about the cause of the accident.”