U.S. crude futures fell more than $4 on Tuesday, testing below $59 a barrel, on persistent concerns about weaker demand in a slowing economy as global equities slumped, Reuters reported.
On the New York Mercantile Exchange at 11:13 a.m. EST, December crude was down $3.65, or 5.85 percent, at $58.76 a barrel, trading from $58.32 -- the lowest since prices hit $56.10 on March 20, 2007 -- to $62.28.