May crude-oil futures tumbled $2.22, or 4%, to $53.81 a barrel, after the Energy Department reported that crude supplies rose by 4.1 million barrel for the week ended March 18. Distillate inventories fell by 2.8 million barrels, gasoline inventories fell by 4.1 million.

But in after-hours trading the oil futures rose to $54.30 a barrel after television stations reported an explosion at BP’s refinery in Texas City, Texas. The explosion has killed four people and injured at least 10.