The Latest: Police say at least 40 dead after bus and truck collide in southwest France

French Prime Minister Manuel Valls addresses the media in Puisseguin, near Bordeaux, southwestern France, following a road accident in which at least 42 people were killed, Friday, Oct. 23, 2015. French Prime Minister Manuel Valls says a bus and truck collision in southwest wine country that killed 42 was the deadliest road accident in France in more than 30 years. (AP Photo/Bod Edme) (The Associated Press)

The latest news about the crash between a bus and a truck in southwest France. All times local:

09:15 a.m.

French police say that at least 40 people have been killed in a collision between a bus and truck near the southwestern city of Bordeaux.

An official with the national gendarme service said the crash occurred near the town of Puisseguin, and that death toll may have been so unusually high because the bus caught fire.

The official said scores of emergency workers in the region have been mobilized to help. The official was not authorized to be publicly named.

Europe-1 radio reported that the bus was carrying primarily elderly people. It was not immediately clear how many people were on the bus, or their nationalities or other details.