Bomb experts on Monday defused a bomb in a package sent to the Europol headquarters at The Hague. (OTCBB:HGUE)

Hours earlier police in Frankfurt, Germany found a possible parcel bomb that had been sent to Trichet.

On Sunday European Commission head Romano Prodi escaped unharmed when a parcel bomb exploded at his home.

A previously unknown group known as the Informal Anarchic Federation claimed responsibility for two earlier rubbish bin bombings near Prodi's home in which no-one was hurt.