The FBI opened an investigation into the cargo ship that struck and took down the Francis Scott Key Bridge in Baltimore last month.

According to those familiar with the topic, the investigation will look into whether the crew members onboard knew there were problems with the ship when they left the port. The Dali, a 984-foot-long vessel carrying shipping containers, experienced a “complete blackout” minutes before colliding with the bridge. The ship was managed by Synergy Marine Group.