Security beefed up for Obama UK visit

LONDON - Security for US President Barack Obama's first state visit to the United Kingdom has been beefed up following Osama bin Laden's death.

"Though bin Laden is dead, al-Qaida is not. The terrorists almost certainly will attempt to avenge him and we must, and will, remain vigilant and resolute," said CIA Director Leon Panetta.

British police carried out a controlled explosion to destroy a suspicious bag in a central London street last week, although it later turned out to be harmless.