Three arrested in terror raids
Three men, aged 18, 24, and 26, were arrested in early morning terror raids in Newham, just miles from the Olympic stadium.
Two other men and a woman were also held in operations that police say are not directly linked to the Games but part of a wider tightening of security. The terror alert level remains at "substantial".
A police spokesman said: "Searches under the Terrorism Act 2000 are being carried out at eight residential premises in east, west and north London and one business premises in east London. Public safety remains our overriding concern."