Stock
markets in Europe and the US have fallen over concerns about the health of one
of Portugal's biggest banks.
Shares
in Banco Espirito Santo were suspended after falling 17% following concerns
about accounting irregularities at its parent group.
As a
result, the Lisbon stock exchange fell more than 4%, Madrid's IBEX was down
2.7%, while the Paris Cac 40 and Frankfurt's Dax were both 1.8% lower.
Wall
Street also opened sharply lower, with
