<sod >Â Â  Officers spotted the man "acting suspiciously" in an "area known for anti-social behaviour", Scotland Yard said in a statement.< eod>< sod > Â  Officers patrolling the area adjacent to the Houses of Parliament spotted the man "acting suspiciously" in an "area known for anti-social behaviour", Scotland Yard said in a statement. The man "was found in possession of a large knife", and officers then placed him under arrest.< eod>