Americas Last Updated: Friday, 20 April 2007, 21:28 GMT 22:28 UK Gunman report sparks Nasa alert The US space agency, Nasa, evacuates a building in Houston, Texas, after reports that a gunman is inside.

Asia-Pacific Last Updated: Friday, 20 April 2007, 20:43 GMT 21:43 UK Philippine group beheads hostages Abu Sayyaf militants decapitate seven Christian hostages on the southern Philippine island of Jolo.     Europe Last Updated: Friday, 20 April 2007, 21:21 GMT 22:21 UK French rivals woo unsure voters The rivals in the French presidential election make their final effort to win over the many undecided voters.         Middle East Last Updated: Friday, 20 April 2007, 19:26 GMT 20:26 UK Bush upbeat on Iraq security plan US President George W Bush says there are early signs that the Iraq security plan is meeting expectations.         South Asia Last Updated: Friday, 20 April 2007, 20:56 GMT 21:56 UK Bollywood celebrates star wedding Bollywood stars Aishwarya Rai and Abhishek Bachchan tie the knot in India's film capital Mumbai.     Africa Last Updated: Friday, 20 April 2007, 21:06 GMT 22:06 UK Nigerians tense on eve of polls Nigeria begins distributing ballot papers hours before presidential elections begin and amid new clashes