Al-Qaeda warned Germans today to change their government in the September 27 election, saying they will face a "bad awakening" if they do not, according to two intelligence monitoring services.
Germany was also told to withdraw its 4,200 troops from Afghanistan or face being attacked at home, the US-based groups said.
In video footage a man identified as Abu Talha the German and speaking in German, says that if Chancellor Angela Merkel is re-elected, "bitter times await the Germans," according to IntelCenter and the SITE Intelligence Group.
He asks: "Mrs Merkel, what is the logical outcome reaped by the British and Spanish conservatives by their support for the Iraq war?" in an apparent reference to attacks in Madrid and London in 2004 and 2005.
He appears to suggest that if German voters do not heed his warnings Al-Qaeda will act within a fortnight.
Germany's interior ministry said today there was an increased risk of attacks on German soil ahead of the elections, and said security at airports and train stations had been boosted.