London police cordon off streets near St Paul's Cathedral in brief security alert

LONDON (Reuters) - Police in the City of London cordoned off several streets near St Paul's Cathedral on Wednesday after finding what a spokeswoman called a suspicious vehicle.

The lockdown lasted about an hour before roads were reopened and the area declared safe.

Police have been on high alert in recent days after a "suspicious item" was found on an underground train near the Canary Wharf financial district last week, leading to the arrest of a teenager under terrorism laws.

Britain is on its second-highest alert level of "severe", meaning an attack is considered highly likely.

(Reporting by Kate Holton; editing by Stephen Addison)

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