Investigators on Tuesday were trying to determine what caused an explosion aboard a cargo ship laden with coal as it departed Baltimore's harbor for East Africa. Video of the explosion showed flames shooting high into the air,

Officials said no one was injured in the blast Monday evening, which prompted a mayday call when it was reported near the site of last year’s Francis Scott Key Bridge collapse.

Eyewitnesses were stunned as a cargo ship exploded near the site of the Francis Scott Key Bridge collapse in Baltimore. No injuries were reported.