TRENTON, Canada 

An attack Wednesday on a convoy headed to a Canadian-owned gold mine in Burkina Faso has left 37 dead and more than 50 wounded.

Semafo, the Montreal gold mining firm that owns the Boungou Mine, said the attack occurred about 40 kilometers (25 miles) from the mine.

Military personnel were escorting five buses of Semafo employees as well as contractors and suppliers.

The company said the mine is secure and its operations are not affected.

The attack took place between the company’s Fada and Boungou mine sites. Reports say an improvised explosive device (IED) exploded and then an

Read more: Attack on Canadian mine convoy in Africa leaves 37 dead