BALTIMORE (AP) — The Singapore-based operator of the ship that crashed into Baltimore’s Francis Scott Key Bridge, causing it to collapse and killing six people, has been indicted along with a key employee, federal prosecutors said Tuesday.

The indictment names Synergy Marine Pte Ltd., based in Singapore, and Synergy Maritime Pte Ltd., based in Chennai, India. Radhakrishnan Karthik Nair, 47, an Indian national who was technical superintendent for the Dali container ship, was also charged.

The Dali crashed into the Francis Scott Key Bridge on March 26, 2024, killing six construction workers who had been filling potholes.

The companies and Nair are charged with conspiracy, willfully failing to immediately inform the U.S. Coast Guard of a known hazardous condition, obstruction of an agency proceeding, and false statements.

An FBI investigation into the crash focused on the vessel’s operations and whether the crew knew of critical systems issues before leaving port.

The National Transportation Safety Board found last year that two electrical blackouts — one caused by a loose wire aboard the Dali and another by problems with a fuel pump — disabled the controls of the huge cargo ship before it crashed into the bridge.

The Dali was leaving Baltimore bound for Sri Lanka when its steering failed because of the power loss. The ship crashed into a supporting column of the bridge at about 1:30 a.m.

Maryland officials estimate it could cost between $4.3 billion and $5.2 billion to replace the bridge, which is expected to be open to traffic in late 2030.

But the true cost of the collapse was far greater, according to the Maryland attorney general’s office. It halted shipping at the Port of Baltimore, disrupted the livelihoods of thousands, rerouted road traffic through communities already bearing disproportionate burdens, and triggered economic problems statewide.

The indictment comes on the heels of a settlement in principle between the State of Maryland, Synergy Marine, and Grace Ocean Private Limited, the Singapore-based ship owner, Attorney General Anthony Brown announced in April.

That lawsuit alleged the crash was the result of negligence, mismanagement, and the reckless operation of a vessel that was not seaworthy and should never have left port. Plaintiffs include the families of the six construction workers who died, owners of cargo that was on the ship, and local governments seeking damages for economic losses. The details of the settlement haven’t been disclosed, and some portions of the lawsuit remain unresolved.

The state sought damages on behalf of its agencies for the destruction of the bridge, harm to the Patapsco River and surrounding environment, lost revenues, and economic losses to Maryland and its residents.

The settlement does not resolve any claims the state has against the shipbuilder, Hyundai, the attorney general’s office said in April.

The bridge, a longstanding Baltimore landmark, was a vital piece of transportation infrastructure that allowed drivers to easily bypass downtown. The original 1.6-mile (2.6-kilometer) steel span took five years to build and opened to traffic in 1977.