By People Staff
May 18, 2010 10:45 AM
Kevork Djansezian/AP

More than a year after his son tragically died while on vacation in the Bahamas, John Travolta’s family is facing heartbreak again.

A source confirms to PEOPLE that two dogs who belonged to the actor were struck and killed at Bangor International Airport in Maine on Thursday, shortly after he and members of his family landed there.

The source tells PEOPLE that the dogs were both on leashes while being walked, and were making their way to some grass when they were hit by an airport service truck.

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In a statement released to the Bangor Daily News, the city of Bangor said, “An airport service pickup truck was approaching the airplane to service the airplane and did not see the dogs. Unfortunately, the dogs were struck and killed. The airport is investigating the accident. Out of respect for the family’s privacy the city will make no further comment.”

The newspaper also reported that the family was headed to their home in Islesboro, Maine, and that it was not known whether the actor had piloted the plane.

Airport director Rebecca Hupp told the newspaper: “Clearly, this is an unfortunate accident. Our deepest sympathies are with the family.

To leave your condolences for the Travolta family, visit PEOPLE

With reporting by ELIZABETH LEONARD