NEW ORLEANS (AP) _ A tractor-trailer carrying Christmas trees slammed into a minivan and a car on a freeway Thanksgiving night, killing seven people and injuring six, all of them relatives.

The accident happened about 11 p.m. on an elevated stretch of Interstate 10. The victims lived in the New Orleans suburb of Gretna and were returning from a Thanksgiving party.

The car and the minivan behind it were going about 35 mph, their emergency lights blinking, because the car was having engine troubles, Raphael Padilla, who was driving the car, told WDSU-TV.

The dead all were passengers in the minivan, which was crushed against a guard rail by the truck. One other person in the minivan was injured, as were all five people in the car. Four were hospitalized in guarded condition.

The truck driver was not hurt. No charges were filed.

The cause of the wreck was under investigation. The road was dry at the time.

The people killed were identified as Xiomara Padilla, 37; Carlos Padilla Jr., 40, his wife, Miranda, and their daughters Karrina, 17, and Melissa, 18; Gladys Padilla, 59, and her son Mauricio, 24.

The accident took place not far from the site of a bus wreck on Interstate 610 that killed 22 people on their way to a Mississippi casino on Mother's Day.