Description:The U.S. Coast Guard is investigating a fire on board a vessel in Lafitte.
It happened just before 7 o’clock Tuesday evening about two miles from the C & M Marina.
Authorities say a tug boat first caught fire, then the fire spread to the barge.
All four people on board have been accounted for. Two of them are being treated for burns.
The fire burned well into the night. The Coast Guard is still working to determine the cause.(1:56)