Three crude improvised explosive devices were sent to the post room at Waterloo train station and the head offices of London City and Heathrow airports. The IEDs, capable of creating a small fire, were each packaged in an A4 white envelope bag and a Jiffy bag. The addresses were handwritten on the packages and sent from Ireland. The packaging had an image of a heart with the words love and Eire written on them. The Irish Republican Army (IRA) claimed responsibility. Police stated that the IRA sent a codeword to a Northern Irish media outlet confirming the parcels were from them.