Parcel bombs have been intercepted at Britain's MI6 spy agency.
The foreign intelligence agency has said two bombs were sent to the offices from Caernarfon, northwest Wales.
Two suspects, aged 52 and 21, have been arrested on suspicion of sending the explosives, after the suspicious packages were found last week.
One bomb was discovered at the Secret Intelligence Service building in Vauxhall, south London and the other was found at a south London postal sorting office.
