(New Buffalo, MI) - The cause of a boat fire in Lake Michigan this week may never be known.

According to the U.S. Coast Guard, an estimated 10 people pretty much from the same family made it off safely. The over 30-foot boat was about a half-mile off the shoreline when it caught fire Tuesday.

New Buffalo Fire Chief Chris Huston says the owner reported the engine wasn’t quite running right, but what started the fire couldn’t be determined.  Huston says the people on the boat were from New Buffalo.

Another boater seeing smoke went over and allowed the victims to board his watercraft.  There were no injuries. Huston said every person on the watercraft had a life jacket on and likely would have been fine had they been forced to jump into the water.