Problems at two US regional banks have made investors nervous and triggered a sell-off in shares.

Fears are mounting around the health of their lending businesses.

Zions and Western Alliance reveal problems with bad loans as scrutiny of regional banks’ lending practices increases

Rolling coverage of the latest economic and financial news

Signs of credit stress leave markets in Europe and Asia down, while investors turn to safe haven assets

Shares of banks listed around the world were rattled on Friday following concerns over bad loans in the United States.

Problems at two US regional banks have made investors nervous and triggered a sell-off in shares.

As shares remain high, investors have been jumping at signs of trouble.